19990568

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{1151}}^1$

素因数の和:1337

約数の個数: 32

約数和(自身を含む): 40642560

約数和(自身を除く): 20651992

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 167, 334, 668, 1151, 1336, 2171, 2302, 4342, 4604, 8684, 9208, 14963, 17368, 29926, 59852, 119704, 192217, 384434, 768868, 1537736, 2498821, 4997642, 9995284, 19990568]

約数ペア:

[(1, 19990568), (2, 9995284), (4, 4997642), (8, 2498821), (13, 1537736), (26, 768868), (52, 384434), (104, 192217), (167, 119704), (334, 59852), (668, 29926), (1151, 17368), (1336, 14963), (2171, 9208), (2302, 8684), (4342, 4604)]