389360

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:201

約数の個数: 40

約数和(自身を含む): 940416

約数和(自身を除く): 551056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 157, 248, 310, 314, 496, 620, 628, 785, 1240, 1256, 1570, 2480, 2512, 3140, 4867, 6280, 9734, 12560, 19468, 24335, 38936, 48670, 77872, 97340, 194680, 389360]

約数ペア:

[(1, 389360), (2, 194680), (4, 97340), (5, 77872), (8, 48670), (10, 38936), (16, 24335), (20, 19468), (31, 12560), (40, 9734), (62, 6280), (80, 4867), (124, 3140), (155, 2512), (157, 2480), (248, 1570), (310, 1256), (314, 1240), (496, 785), (620, 628)]