15961491

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19489}}^1$

素因数の和:19515

約数の個数: 24

約数和(自身を含む): 28377440

約数和(自身を除く): 12415949

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 19489, 58467, 136423, 175401, 253357, 409269, 760071, 1227807, 1773499, 2280213, 5320497, 15961491]

約数ペア:

[(1, 15961491), (3, 5320497), (7, 2280213), (9, 1773499), (13, 1227807), (21, 760071), (39, 409269), (63, 253357), (91, 175401), (117, 136423), (273, 58467), (819, 19489)]