20179620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1579}}^1$

素因数の和:1665

約数の個数: 72

約数和(自身を含む): 62112960

約数和(自身を除く): 41933340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 1579, 2130, 2556, 3158, 3195, 4260, 4737, 6316, 6390, 7895, 9474, 12780, 14211, 15790, 18948, 23685, 28422, 31580, 47370, 56844, 71055, 94740, 112109, 142110, 224218, 284220, 336327, 448436, 560545, 672654, 1008981, 1121090, 1345308, 1681635, 2017962, 2242180, 3363270, 4035924, 5044905, 6726540, 10089810, 20179620]

約数ペア:

[(1, 20179620), (2, 10089810), (3, 6726540), (4, 5044905), (5, 4035924), (6, 3363270), (9, 2242180), (10, 2017962), (12, 1681635), (15, 1345308), (18, 1121090), (20, 1008981), (30, 672654), (36, 560545), (45, 448436), (60, 336327), (71, 284220), (90, 224218), (142, 142110), (180, 112109), (213, 94740), (284, 71055), (355, 56844), (426, 47370), (639, 31580), (710, 28422), (852, 23685), (1065, 18948), (1278, 15790), (1420, 14211), (1579, 12780), (2130, 9474), (2556, 7895), (3158, 6390), (3195, 6316), (4260, 4737)]