20781646240

素因数分解:

$2^5\times 5^1\times {\mathrm{83}}^1\times {\mathrm{941}}^1\times {\mathrm{1663}}^1$

素因数の和:2702

約数の個数: 96

約数和(自身を含む): 49770878976

約数和(自身を除く): 28989232736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 83, 160, 166, 332, 415, 664, 830, 941, 1328, 1660, 1663, 1882, 2656, 3320, 3326, 3764, 4705, 6640, 6652, 7528, 8315, 9410, 13280, 13304, 15056, 16630, 18820, 26608, 30112, 33260, 37640, 53216, 66520, 75280, 78103, 133040, 138029, 150560, 156206, 266080, 276058, 312412, 390515, 552116, 624824, 690145, 781030, 1104232, 1249648, 1380290, 1562060, 1564883, 2208464, 2499296, 2760580, 3124120, 3129766, 4416928, 5521160, 6248240, 6259532, 7824415, 11042320, 12496480, 12519064, 15648830, 22084640, 25038128, 31297660, 50076256, 62595320, 125190640, 129885289, 250381280, 259770578, 519541156, 649426445, 1039082312, 1298852890, 2078164624, 2597705780, 4156329248, 5195411560, 10390823120, 20781646240]

約数ペア:

[(1, 20781646240), (2, 10390823120), (4, 5195411560), (5, 4156329248), (8, 2597705780), (10, 2078164624), (16, 1298852890), (20, 1039082312), (32, 649426445), (40, 519541156), (80, 259770578), (83, 250381280), (160, 129885289), (166, 125190640), (332, 62595320), (415, 50076256), (664, 31297660), (830, 25038128), (941, 22084640), (1328, 15648830), (1660, 12519064), (1663, 12496480), (1882, 11042320), (2656, 7824415), (3320, 6259532), (3326, 6248240), (3764, 5521160), (4705, 4416928), (6640, 3129766), (6652, 3124120), (7528, 2760580), (8315, 2499296), (9410, 2208464), (13280, 1564883), (13304, 1562060), (15056, 1380290), (16630, 1249648), (18820, 1104232), (26608, 781030), (30112, 690145), (33260, 624824), (37640, 552116), (53216, 390515), (66520, 312412), (75280, 276058), (78103, 266080), (133040, 156206), (138029, 150560)]