20783960

素因数分解:

$2^3\times 5^1\times {\mathrm{503}}^1\times {\mathrm{1033}}^1$

素因数の和:1547

約数の個数: 32

約数和(自身を含む): 46902240

約数和(自身を除く): 26118280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503, 1006, 1033, 2012, 2066, 2515, 4024, 4132, 5030, 5165, 8264, 10060, 10330, 20120, 20660, 41320, 519599, 1039198, 2078396, 2597995, 4156792, 5195990, 10391980, 20783960]

約数ペア:

[(1, 20783960), (2, 10391980), (4, 5195990), (5, 4156792), (8, 2597995), (10, 2078396), (20, 1039198), (40, 519599), (503, 41320), (1006, 20660), (1033, 20120), (2012, 10330), (2066, 10060), (2515, 8264), (4024, 5165), (4132, 5030)]