396738640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{115331}}^1$

素因数の和:115387

約数の個数: 40

約数和(自身を含む): 943877088

約数和(自身を除く): 547138448

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 115331, 230662, 461324, 576655, 922648, 1153310, 1845296, 2306620, 4613240, 4959233, 9226480, 9918466, 19836932, 24796165, 39673864, 49592330, 79347728, 99184660, 198369320, 396738640]

約数ペア:

[(1, 396738640), (2, 198369320), (4, 99184660), (5, 79347728), (8, 49592330), (10, 39673864), (16, 24796165), (20, 19836932), (40, 9918466), (43, 9226480), (80, 4959233), (86, 4613240), (172, 2306620), (215, 1845296), (344, 1153310), (430, 922648), (688, 576655), (860, 461324), (1720, 230662), (3440, 115331)]