7898540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1787}}^1$

素因数の和:1826

約数の個数: 48

約数和(自身を含む): 18924192

約数和(自身を除く): 11025652

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 1787, 2210, 3574, 4420, 7148, 8935, 17870, 23231, 30379, 35740, 46462, 60758, 92924, 116155, 121516, 151895, 232310, 303790, 394927, 464620, 607580, 789854, 1579708, 1974635, 3949270, 7898540]

約数ペア:

[(1, 7898540), (2, 3949270), (4, 1974635), (5, 1579708), (10, 789854), (13, 607580), (17, 464620), (20, 394927), (26, 303790), (34, 232310), (52, 151895), (65, 121516), (68, 116155), (85, 92924), (130, 60758), (170, 46462), (221, 35740), (260, 30379), (340, 23231), (442, 17870), (884, 8935), (1105, 7148), (1787, 4420), (2210, 3574)]