19781234

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{233}}^1$

素因数の和:490

約数の個数: 32

約数和(自身を含む): 34572096

約数和(自身を除く): 14790862

約数列:

[1, 2, 11, 17, 22, 34, 187, 227, 233, 374, 454, 466, 2497, 2563, 3859, 3961, 4994, 5126, 7718, 7922, 42449, 43571, 52891, 84898, 87142, 105782, 581801, 899147, 1163602, 1798294, 9890617, 19781234]

約数ペア:

[(1, 19781234), (2, 9890617), (11, 1798294), (17, 1163602), (22, 899147), (34, 581801), (187, 105782), (227, 87142), (233, 84898), (374, 52891), (454, 43571), (466, 42449), (2497, 7922), (2563, 7718), (3859, 5126), (3961, 4994)]