19409780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{74653}}^1$

素因数の和:74675

約数の個数: 24

約数和(自身を含む): 43896552

約数和(自身を除く): 24486772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 74653, 149306, 298612, 373265, 746530, 970489, 1493060, 1940978, 3881956, 4852445, 9704890, 19409780]

約数ペア:

[(1, 19409780), (2, 9704890), (4, 4852445), (5, 3881956), (10, 1940978), (13, 1493060), (20, 970489), (26, 746530), (52, 373265), (65, 298612), (130, 149306), (260, 74653)]