18631472

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{257}}^1$

素因数の和:485

約数の個数: 40

約数和(自身を含む): 38006496

約数和(自身を除く): 19375024

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 197, 257, 368, 394, 514, 788, 1028, 1576, 2056, 3152, 4112, 4531, 5911, 9062, 11822, 18124, 23644, 36248, 47288, 50629, 72496, 94576, 101258, 202516, 405032, 810064, 1164467, 2328934, 4657868, 9315736, 18631472]

約数ペア:

[(1, 18631472), (2, 9315736), (4, 4657868), (8, 2328934), (16, 1164467), (23, 810064), (46, 405032), (92, 202516), (184, 101258), (197, 94576), (257, 72496), (368, 50629), (394, 47288), (514, 36248), (788, 23644), (1028, 18124), (1576, 11822), (2056, 9062), (3152, 5911), (4112, 4531)]