20810361380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6481}}^1\times {\mathrm{5179}}^1$

素因数の和:11700

約数の個数: 48

約数和(自身を含む): 45127165440

約数和(自身を除く): 24316804060

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 5179, 6481, 10358, 12962, 20716, 25895, 25924, 32405, 51790, 64810, 103580, 129620, 160549, 200911, 321098, 401822, 642196, 802745, 803644, 1004555, 1605490, 2009110, 3210980, 4018220, 33565099, 67130198, 134260396, 167825495, 335650990, 671301980, 1040518069, 2081036138, 4162072276, 5202590345, 10405180690, 20810361380]

約数ペア:

[(1, 20810361380), (2, 10405180690), (4, 5202590345), (5, 4162072276), (10, 2081036138), (20, 1040518069), (31, 671301980), (62, 335650990), (124, 167825495), (155, 134260396), (310, 67130198), (620, 33565099), (5179, 4018220), (6481, 3210980), (10358, 2009110), (12962, 1605490), (20716, 1004555), (25895, 803644), (25924, 802745), (32405, 642196), (51790, 401822), (64810, 321098), (103580, 200911), (129620, 160549)]