19889740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{337}}^1$

素因数の和:586

約数の個数: 48

約数和(自身を含む): 45313632

約数和(自身を除く): 25423892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 227, 260, 337, 454, 674, 908, 1135, 1348, 1685, 2270, 2951, 3370, 4381, 4540, 5902, 6740, 8762, 11804, 14755, 17524, 21905, 29510, 43810, 59020, 76499, 87620, 152998, 305996, 382495, 764990, 994487, 1529980, 1988974, 3977948, 4972435, 9944870, 19889740]

約数ペア:

[(1, 19889740), (2, 9944870), (4, 4972435), (5, 3977948), (10, 1988974), (13, 1529980), (20, 994487), (26, 764990), (52, 382495), (65, 305996), (130, 152998), (227, 87620), (260, 76499), (337, 59020), (454, 43810), (674, 29510), (908, 21905), (1135, 17524), (1348, 14755), (1685, 11804), (2270, 8762), (2951, 6740), (3370, 5902), (4381, 4540)]