210816640

素因数分解:

$2^7\times 5^1\times {\mathrm{329401}}^1$

素因数の和:329420

約数の個数: 32

約数和(自身を含む): 503985060

約数和(自身を除く): 293168420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 329401, 658802, 1317604, 1647005, 2635208, 3294010, 5270416, 6588020, 10540832, 13176040, 21081664, 26352080, 42163328, 52704160, 105408320, 210816640]

約数ペア:

[(1, 210816640), (2, 105408320), (4, 52704160), (5, 42163328), (8, 26352080), (10, 21081664), (16, 13176040), (20, 10540832), (32, 6588020), (40, 5270416), (64, 3294010), (80, 2635208), (128, 1647005), (160, 1317604), (320, 658802), (640, 329401)]