21249838

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{7573}}^1$

素因数の和:7659

約数の個数: 16

約数和(自身を含む): 33810336

約数和(自身を除く): 12560498

約数列:

[1, 2, 23, 46, 61, 122, 1403, 2806, 7573, 15146, 174179, 348358, 461953, 923906, 10624919, 21249838]

約数ペア:

[(1, 21249838), (2, 10624919), (23, 923906), (46, 461953), (61, 348358), (122, 174179), (1403, 15146), (2806, 7573)]