20270120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2293}}^1$

素因数の和:2334

約数の個数: 64

約数和(自身を含む): 52027920

約数和(自身を除く): 31757800

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 2293, 4420, 4586, 8840, 9172, 11465, 18344, 22930, 29809, 38981, 45860, 59618, 77962, 91720, 119236, 149045, 155924, 194905, 238472, 298090, 311848, 389810, 506753, 596180, 779620, 1013506, 1192360, 1559240, 2027012, 2533765, 4054024, 5067530, 10135060, 20270120]

約数ペア:

[(1, 20270120), (2, 10135060), (4, 5067530), (5, 4054024), (8, 2533765), (10, 2027012), (13, 1559240), (17, 1192360), (20, 1013506), (26, 779620), (34, 596180), (40, 506753), (52, 389810), (65, 311848), (68, 298090), (85, 238472), (104, 194905), (130, 155924), (136, 149045), (170, 119236), (221, 91720), (260, 77962), (340, 59618), (442, 45860), (520, 38981), (680, 29809), (884, 22930), (1105, 18344), (1768, 11465), (2210, 9172), (2293, 8840), (4420, 4586)]