21096740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4861}}^1$

素因数の和:4908

約数の個数: 48

約数和(自身を含む): 52276224

約数和(自身を除く): 31179484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4861, 9722, 19444, 24305, 34027, 48610, 68054, 97220, 136108, 150691, 170135, 301382, 340270, 602764, 680540, 753455, 1054837, 1506910, 2109674, 3013820, 4219348, 5274185, 10548370, 21096740]

約数ペア:

[(1, 21096740), (2, 10548370), (4, 5274185), (5, 4219348), (7, 3013820), (10, 2109674), (14, 1506910), (20, 1054837), (28, 753455), (31, 680540), (35, 602764), (62, 340270), (70, 301382), (124, 170135), (140, 150691), (155, 136108), (217, 97220), (310, 68054), (434, 48610), (620, 34027), (868, 24305), (1085, 19444), (2170, 9722), (4340, 4861)]