442240640

素因数分解:

$2^7\times 5^1\times {\mathrm{691001}}^1$

素因数の和:691020

約数の個数: 32

約数和(自身を含む): 1057233060

約数和(自身を除く): 614992420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 691001, 1382002, 2764004, 3455005, 5528008, 6910010, 11056016, 13820020, 22112032, 27640040, 44224064, 55280080, 88448128, 110560160, 221120320, 442240640]

約数ペア:

[(1, 442240640), (2, 221120320), (4, 110560160), (5, 88448128), (8, 55280080), (10, 44224064), (16, 27640040), (20, 22112032), (32, 13820020), (40, 11056016), (64, 6910010), (80, 5528008), (128, 3455005), (160, 2764004), (320, 1382002), (640, 691001)]