81002320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{331}}^1$

素因数の和:393

約数の個数: 160

約数和(自身を含む): 237127680

約数和(自身を除く): 156125360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 23, 28, 35, 38, 40, 46, 56, 70, 76, 80, 92, 95, 112, 115, 133, 140, 152, 161, 184, 190, 230, 266, 280, 304, 322, 331, 368, 380, 437, 460, 532, 560, 644, 662, 665, 760, 805, 874, 920, 1064, 1288, 1324, 1330, 1520, 1610, 1655, 1748, 1840, 2128, 2185, 2317, 2576, 2648, 2660, 3059, 3220, 3310, 3496, 4370, 4634, 5296, 5320, 6118, 6289, 6440, 6620, 6992, 7613, 8740, 9268, 10640, 11585, 12236, 12578, 12880, 13240, 15226, 15295, 17480, 18536, 23170, 24472, 25156, 26480, 30452, 30590, 31445, 34960, 37072, 38065, 44023, 46340, 48944, 50312, 53291, 60904, 61180, 62890, 76130, 88046, 92680, 100624, 106582, 121808, 122360, 125780, 144647, 152260, 176092, 185360, 213164, 220115, 244720, 251560, 266455, 289294, 304520, 352184, 426328, 440230, 503120, 532910, 578588, 609040, 704368, 723235, 852656, 880460, 1012529, 1065820, 1157176, 1446470, 1760920, 2025058, 2131640, 2314352, 2892940, 3521840, 4050116, 4263280, 5062645, 5785880, 8100232, 10125290, 11571760, 16200464, 20250580, 40501160, 81002320]

約数ペア:

[(1, 81002320), (2, 40501160), (4, 20250580), (5, 16200464), (7, 11571760), (8, 10125290), (10, 8100232), (14, 5785880), (16, 5062645), (19, 4263280), (20, 4050116), (23, 3521840), (28, 2892940), (35, 2314352), (38, 2131640), (40, 2025058), (46, 1760920), (56, 1446470), (70, 1157176), (76, 1065820), (80, 1012529), (92, 880460), (95, 852656), (112, 723235), (115, 704368), (133, 609040), (140, 578588), (152, 532910), (161, 503120), (184, 440230), (190, 426328), (230, 352184), (266, 304520), (280, 289294), (304, 266455), (322, 251560), (331, 244720), (368, 220115), (380, 213164), (437, 185360), (460, 176092), (532, 152260), (560, 144647), (644, 125780), (662, 122360), (665, 121808), (760, 106582), (805, 100624), (874, 92680), (920, 88046), (1064, 76130), (1288, 62890), (1324, 61180), (1330, 60904), (1520, 53291), (1610, 50312), (1655, 48944), (1748, 46340), (1840, 44023), (2128, 38065), (2185, 37072), (2317, 34960), (2576, 31445), (2648, 30590), (2660, 30452), (3059, 26480), (3220, 25156), (3310, 24472), (3496, 23170), (4370, 18536), (4634, 17480), (5296, 15295), (5320, 15226), (6118, 13240), (6289, 12880), (6440, 12578), (6620, 12236), (6992, 11585), (7613, 10640), (8740, 9268)]