21039754

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:238

約数の個数: 32

約数和(自身を含む): 33926400

約数和(自身を除く): 12886646

約数列:

[1, 2, 37, 59, 61, 74, 79, 118, 122, 158, 2183, 2257, 2923, 3599, 4366, 4514, 4661, 4819, 5846, 7198, 9322, 9638, 133163, 172457, 178303, 266326, 284321, 344914, 356606, 568642, 10519877, 21039754]

約数ペア:

[(1, 21039754), (2, 10519877), (37, 568642), (59, 356606), (61, 344914), (74, 284321), (79, 266326), (118, 178303), (122, 172457), (158, 133163), (2183, 9638), (2257, 9322), (2923, 7198), (3599, 5846), (4366, 4819), (4514, 4661)]