511388540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1966879}}^1$

素因数の和:1966901

約数の個数: 24

約数和(自身を含む): 1156525440

約数和(自身を除く): 645136900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1966879, 3933758, 7867516, 9834395, 19668790, 25569427, 39337580, 51138854, 102277708, 127847135, 255694270, 511388540]

約数ペア:

[(1, 511388540), (2, 255694270), (4, 127847135), (5, 102277708), (10, 51138854), (13, 39337580), (20, 25569427), (26, 19668790), (52, 9834395), (65, 7867516), (130, 3933758), (260, 1966879)]