21393188

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{2039}}^1$

素因数の和:2147

約数の個数: 24

約数和(自身を含む): 38955840

約数和(自身を除く): 17562652

約数列:

[1, 2, 4, 43, 61, 86, 122, 172, 244, 2039, 2623, 4078, 5246, 8156, 10492, 87677, 124379, 175354, 248758, 350708, 497516, 5348297, 10696594, 21393188]

約数ペア:

[(1, 21393188), (2, 10696594), (4, 5348297), (43, 497516), (61, 350708), (86, 248758), (122, 175354), (172, 124379), (244, 87677), (2039, 10492), (2623, 8156), (4078, 5246)]