20145793475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{6763}}^1$

素因数の和:6996

約数の個数: 48

約数和(自身を含む): 27235435392

約数和(自身を除く): 7089641917

約数列:

[1, 5, 17, 25, 43, 85, 163, 215, 425, 731, 815, 1075, 2771, 3655, 4075, 6763, 7009, 13855, 18275, 33815, 35045, 69275, 114971, 119153, 169075, 175225, 290809, 574855, 595765, 1102369, 1454045, 2874275, 2978825, 4943753, 5511845, 7270225, 18740273, 24718765, 27559225, 47401867, 93701365, 123593825, 237009335, 468506825, 805831739, 1185046675, 4029158695, 20145793475]

約数ペア:

[(1, 20145793475), (5, 4029158695), (17, 1185046675), (25, 805831739), (43, 468506825), (85, 237009335), (163, 123593825), (215, 93701365), (425, 47401867), (731, 27559225), (815, 24718765), (1075, 18740273), (2771, 7270225), (3655, 5511845), (4075, 4943753), (6763, 2978825), (7009, 2874275), (13855, 1454045), (18275, 1102369), (33815, 595765), (35045, 574855), (69275, 290809), (114971, 175225), (119153, 169075)]