81858840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{223}}^1$

素因数の和:286

約数の個数: 256

約数和(自身を含む): 309657600

約数和(自身を除く): 227798760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 19, 20, 21, 23, 24, 28, 30, 35, 38, 40, 42, 46, 56, 57, 60, 69, 70, 76, 84, 92, 95, 105, 114, 115, 120, 133, 138, 140, 152, 161, 168, 184, 190, 210, 223, 228, 230, 266, 276, 280, 285, 322, 345, 380, 399, 420, 437, 446, 456, 460, 483, 532, 552, 570, 644, 665, 669, 690, 760, 798, 805, 840, 874, 892, 920, 966, 1064, 1115, 1140, 1288, 1311, 1330, 1338, 1380, 1561, 1596, 1610, 1748, 1784, 1932, 1995, 2185, 2230, 2280, 2415, 2622, 2660, 2676, 2760, 3059, 3122, 3192, 3220, 3345, 3496, 3864, 3990, 4237, 4370, 4460, 4683, 4830, 5129, 5244, 5320, 5352, 6118, 6244, 6440, 6555, 6690, 7805, 7980, 8474, 8740, 8920, 9177, 9366, 9660, 10258, 10488, 12236, 12488, 12711, 13110, 13380, 15295, 15387, 15610, 15960, 16948, 17480, 18354, 18732, 19320, 20516, 21185, 23415, 24472, 25422, 25645, 26220, 26760, 29659, 30590, 30774, 31220, 33896, 35903, 36708, 37464, 41032, 42370, 45885, 46830, 50844, 51290, 52440, 59318, 61180, 61548, 62440, 63555, 71806, 73416, 76935, 84740, 88977, 91770, 93660, 97451, 101688, 102580, 107709, 118636, 122360, 123096, 127110, 143612, 148295, 153870, 169480, 177954, 179515, 183540, 187320, 194902, 205160, 215418, 237272, 254220, 287224, 292353, 296590, 307740, 355908, 359030, 367080, 389804, 430836, 444885, 487255, 508440, 538545, 584706, 593180, 615480, 682157, 711816, 718060, 779608, 861672, 889770, 974510, 1077090, 1169412, 1186360, 1364314, 1436120, 1461765, 1779540, 1949020, 2046471, 2154180, 2338824, 2728628, 2923530, 3410785, 3559080, 3898040, 4092942, 4308360, 5457256, 5847060, 6821570, 8185884, 10232355, 11694120, 13643140, 16371768, 20464710, 27286280, 40929420, 81858840]

約数ペア:

[(1, 81858840), (2, 40929420), (3, 27286280), (4, 20464710), (5, 16371768), (6, 13643140), (7, 11694120), (8, 10232355), (10, 8185884), (12, 6821570), (14, 5847060), (15, 5457256), (19, 4308360), (20, 4092942), (21, 3898040), (23, 3559080), (24, 3410785), (28, 2923530), (30, 2728628), (35, 2338824), (38, 2154180), (40, 2046471), (42, 1949020), (46, 1779540), (56, 1461765), (57, 1436120), (60, 1364314), (69, 1186360), (70, 1169412), (76, 1077090), (84, 974510), (92, 889770), (95, 861672), (105, 779608), (114, 718060), (115, 711816), (120, 682157), (133, 615480), (138, 593180), (140, 584706), (152, 538545), (161, 508440), (168, 487255), (184, 444885), (190, 430836), (210, 389804), (223, 367080), (228, 359030), (230, 355908), (266, 307740), (276, 296590), (280, 292353), (285, 287224), (322, 254220), (345, 237272), (380, 215418), (399, 205160), (420, 194902), (437, 187320), (446, 183540), (456, 179515), (460, 177954), (483, 169480), (532, 153870), (552, 148295), (570, 143612), (644, 127110), (665, 123096), (669, 122360), (690, 118636), (760, 107709), (798, 102580), (805, 101688), (840, 97451), (874, 93660), (892, 91770), (920, 88977), (966, 84740), (1064, 76935), (1115, 73416), (1140, 71806), (1288, 63555), (1311, 62440), (1330, 61548), (1338, 61180), (1380, 59318), (1561, 52440), (1596, 51290), (1610, 50844), (1748, 46830), (1784, 45885), (1932, 42370), (1995, 41032), (2185, 37464), (2230, 36708), (2280, 35903), (2415, 33896), (2622, 31220), (2660, 30774), (2676, 30590), (2760, 29659), (3059, 26760), (3122, 26220), (3192, 25645), (3220, 25422), (3345, 24472), (3496, 23415), (3864, 21185), (3990, 20516), (4237, 19320), (4370, 18732), (4460, 18354), (4683, 17480), (4830, 16948), (5129, 15960), (5244, 15610), (5320, 15387), (5352, 15295), (6118, 13380), (6244, 13110), (6440, 12711), (6555, 12488), (6690, 12236), (7805, 10488), (7980, 10258), (8474, 9660), (8740, 9366), (8920, 9177)]