309491980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{27983}}^1$

素因数の和:28078

約数の個数: 48

約数和(自身を含む): 752209920

約数和(自身を除く): 442717940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 316, 395, 553, 790, 1106, 1580, 2212, 2765, 5530, 11060, 27983, 55966, 111932, 139915, 195881, 279830, 391762, 559660, 783524, 979405, 1958810, 2210657, 3917620, 4421314, 8842628, 11053285, 15474599, 22106570, 30949198, 44213140, 61898396, 77372995, 154745990, 309491980]

約数ペア:

[(1, 309491980), (2, 154745990), (4, 77372995), (5, 61898396), (7, 44213140), (10, 30949198), (14, 22106570), (20, 15474599), (28, 11053285), (35, 8842628), (70, 4421314), (79, 3917620), (140, 2210657), (158, 1958810), (316, 979405), (395, 783524), (553, 559660), (790, 391762), (1106, 279830), (1580, 195881), (2212, 139915), (2765, 111932), (5530, 55966), (11060, 27983)]