81439320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1553}}^1$

素因数の和:1609

約数の個数: 128

約数和(自身を含む): 268531200

約数和(自身を除く): 187091880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 23, 24, 30, 38, 40, 46, 57, 60, 69, 76, 92, 95, 114, 115, 120, 138, 152, 184, 190, 228, 230, 276, 285, 345, 380, 437, 456, 460, 552, 570, 690, 760, 874, 920, 1140, 1311, 1380, 1553, 1748, 2185, 2280, 2622, 2760, 3106, 3496, 4370, 4659, 5244, 6212, 6555, 7765, 8740, 9318, 10488, 12424, 13110, 15530, 17480, 18636, 23295, 26220, 29507, 31060, 35719, 37272, 46590, 52440, 59014, 62120, 71438, 88521, 93180, 107157, 118028, 142876, 147535, 177042, 178595, 186360, 214314, 236056, 285752, 295070, 354084, 357190, 428628, 442605, 535785, 590140, 678661, 708168, 714380, 857256, 885210, 1071570, 1180280, 1357322, 1428760, 1770420, 2035983, 2143140, 2714644, 3393305, 3540840, 4071966, 4286280, 5429288, 6786610, 8143932, 10179915, 13573220, 16287864, 20359830, 27146440, 40719660, 81439320]

約数ペア:

[(1, 81439320), (2, 40719660), (3, 27146440), (4, 20359830), (5, 16287864), (6, 13573220), (8, 10179915), (10, 8143932), (12, 6786610), (15, 5429288), (19, 4286280), (20, 4071966), (23, 3540840), (24, 3393305), (30, 2714644), (38, 2143140), (40, 2035983), (46, 1770420), (57, 1428760), (60, 1357322), (69, 1180280), (76, 1071570), (92, 885210), (95, 857256), (114, 714380), (115, 708168), (120, 678661), (138, 590140), (152, 535785), (184, 442605), (190, 428628), (228, 357190), (230, 354084), (276, 295070), (285, 285752), (345, 236056), (380, 214314), (437, 186360), (456, 178595), (460, 177042), (552, 147535), (570, 142876), (690, 118028), (760, 107157), (874, 93180), (920, 88521), (1140, 71438), (1311, 62120), (1380, 59014), (1553, 52440), (1748, 46590), (2185, 37272), (2280, 35719), (2622, 31060), (2760, 29507), (3106, 26220), (3496, 23295), (4370, 18636), (4659, 17480), (5244, 15530), (6212, 13110), (6555, 12424), (7765, 10488), (8740, 9318)]