20409496

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{191}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 41696640

約数和(自身を除く): 21287144

約数列:

[1, 2, 4, 8, 19, 37, 38, 74, 76, 148, 152, 191, 296, 361, 382, 703, 722, 764, 1406, 1444, 1528, 2812, 2888, 3629, 5624, 7067, 7258, 13357, 14134, 14516, 26714, 28268, 29032, 53428, 56536, 68951, 106856, 134273, 137902, 268546, 275804, 537092, 551608, 1074184, 2551187, 5102374, 10204748, 20409496]

約数ペア:

[(1, 20409496), (2, 10204748), (4, 5102374), (8, 2551187), (19, 1074184), (37, 551608), (38, 537092), (74, 275804), (76, 268546), (148, 137902), (152, 134273), (191, 106856), (296, 68951), (361, 56536), (382, 53428), (703, 29032), (722, 28268), (764, 26714), (1406, 14516), (1444, 14134), (1528, 13357), (2812, 7258), (2888, 7067), (3629, 5624)]