256400620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{18133}}^1$

素因数の和:18250

約数の個数: 48

約数和(自身を含む): 621488448

約数和(自身を除く): 365087828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 202, 404, 505, 707, 1010, 1414, 2020, 2828, 3535, 7070, 14140, 18133, 36266, 72532, 90665, 126931, 181330, 253862, 362660, 507724, 634655, 1269310, 1831433, 2538620, 3662866, 7325732, 9157165, 12820031, 18314330, 25640062, 36628660, 51280124, 64100155, 128200310, 256400620]

約数ペア:

[(1, 256400620), (2, 128200310), (4, 64100155), (5, 51280124), (7, 36628660), (10, 25640062), (14, 18314330), (20, 12820031), (28, 9157165), (35, 7325732), (70, 3662866), (101, 2538620), (140, 1831433), (202, 1269310), (404, 634655), (505, 507724), (707, 362660), (1010, 253862), (1414, 181330), (2020, 126931), (2828, 90665), (3535, 72532), (7070, 36266), (14140, 18133)]