398045180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1530943}}^1$

素因数の和:1530965

約数の個数: 24

約数和(自身を含む): 900195072

約数和(自身を除く): 502149892

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1530943, 3061886, 6123772, 7654715, 15309430, 19902259, 30618860, 39804518, 79609036, 99511295, 199022590, 398045180]

約数ペア:

[(1, 398045180), (2, 199022590), (4, 99511295), (5, 79609036), (10, 39804518), (13, 30618860), (20, 19902259), (26, 15309430), (52, 7654715), (65, 6123772), (130, 3061886), (260, 1530943)]