19707026

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{991}}^1$

素因数の和:1217

約数の個数: 16

約数和(自身を含む): 30259968

約数和(自身を除く): 10552942

約数列:

[1, 2, 61, 122, 163, 326, 991, 1982, 9943, 19886, 60451, 120902, 161533, 323066, 9853513, 19707026]

約数ペア:

[(1, 19707026), (2, 9853513), (61, 323066), (122, 161533), (163, 120902), (326, 60451), (991, 19886), (1982, 9943)]