18408005

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{349}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 27820800

約数和(自身を除く): 9412795

約数列:

[1, 5, 7, 11, 35, 55, 77, 137, 349, 385, 685, 959, 1507, 1745, 2443, 3839, 4795, 7535, 10549, 12215, 19195, 26873, 47813, 52745, 134365, 239065, 334691, 525943, 1673455, 2629715, 3681601, 18408005]

約数ペア:

[(1, 18408005), (5, 3681601), (7, 2629715), (11, 1673455), (35, 525943), (55, 334691), (77, 239065), (137, 134365), (349, 52745), (385, 47813), (685, 26873), (959, 19195), (1507, 12215), (1745, 10549), (2443, 7535), (3839, 4795)]