15661780825

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{277}}^1\times {\mathrm{769}}^1$

素因数の和:1246

約数の個数: 48

約数和(自身を含む): 20783513520

約数和(自身を除く): 5121732695

約数列:

[1, 5, 17, 25, 85, 173, 277, 425, 769, 865, 1385, 2941, 3845, 4325, 4709, 6925, 13073, 14705, 19225, 23545, 47921, 65365, 73525, 117725, 133037, 213013, 239605, 326825, 665185, 814657, 1065065, 1198025, 2261629, 3325925, 3621221, 4073285, 5325325, 11308145, 18106105, 20366425, 36851249, 56540725, 90530525, 184256245, 626471233, 921281225, 3132356165, 15661780825]

約数ペア:

[(1, 15661780825), (5, 3132356165), (17, 921281225), (25, 626471233), (85, 184256245), (173, 90530525), (277, 56540725), (425, 36851249), (769, 20366425), (865, 18106105), (1385, 11308145), (2941, 5325325), (3845, 4073285), (4325, 3621221), (4709, 3325925), (6925, 2261629), (13073, 1198025), (14705, 1065065), (19225, 814657), (23545, 665185), (47921, 326825), (65365, 239605), (73525, 213013), (117725, 133037)]