19881303

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^2\times {\mathrm{137}}^1$

素因数の和:275

約数の個数: 24

約数和(自身を含む): 29235024

約数和(自身を除く): 9353721

約数列:

[1, 3, 13, 39, 61, 137, 183, 411, 793, 1781, 2379, 3721, 5343, 8357, 11163, 25071, 48373, 108641, 145119, 325923, 509777, 1529331, 6627101, 19881303]

約数ペア:

[(1, 19881303), (3, 6627101), (13, 1529331), (39, 509777), (61, 325923), (137, 145119), (183, 108641), (411, 48373), (793, 25071), (1781, 11163), (2379, 8357), (3721, 5343)]