25857820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{421}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 56575008

約数和(自身を除く): 30717188

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 83, 148, 166, 185, 332, 370, 415, 421, 740, 830, 842, 1660, 1684, 2105, 3071, 4210, 6142, 8420, 12284, 15355, 15577, 30710, 31154, 34943, 61420, 62308, 69886, 77885, 139772, 155770, 174715, 311540, 349430, 698860, 1292891, 2585782, 5171564, 6464455, 12928910, 25857820]

約数ペア:

[(1, 25857820), (2, 12928910), (4, 6464455), (5, 5171564), (10, 2585782), (20, 1292891), (37, 698860), (74, 349430), (83, 311540), (148, 174715), (166, 155770), (185, 139772), (332, 77885), (370, 69886), (415, 62308), (421, 61420), (740, 34943), (830, 31154), (842, 30710), (1660, 15577), (1684, 15355), (2105, 12284), (3071, 8420), (4210, 6142)]