205628540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{790879}}^1$

素因数の和:790901

約数の個数: 24

約数和(自身を含む): 465037440

約数和(自身を除く): 259408900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 790879, 1581758, 3163516, 3954395, 7908790, 10281427, 15817580, 20562854, 41125708, 51407135, 102814270, 205628540]

約数ペア:

[(1, 205628540), (2, 102814270), (4, 51407135), (5, 41125708), (10, 20562854), (13, 15817580), (20, 10281427), (26, 7908790), (52, 3954395), (65, 3163516), (130, 1581758), (260, 790879)]