21203320

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4691}}^1$

素因数の和:4815

約数の個数: 32

約数和(自身を含む): 48139920

約数和(自身を除く): 26936600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 4691, 9382, 18764, 23455, 37528, 46910, 93820, 187640, 530083, 1060166, 2120332, 2650415, 4240664, 5300830, 10601660, 21203320]

約数ペア:

[(1, 21203320), (2, 10601660), (4, 5300830), (5, 4240664), (8, 2650415), (10, 2120332), (20, 1060166), (40, 530083), (113, 187640), (226, 93820), (452, 46910), (565, 37528), (904, 23455), (1130, 18764), (2260, 9382), (4520, 4691)]