20291284

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{6397}}^1$

素因数の和:6475

約数の個数: 24

約数和(自身を含む): 38874248

約数和(自身を除く): 18582964

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1586, 3172, 6397, 12794, 25588, 83161, 166322, 332644, 390217, 780434, 1560868, 5072821, 10145642, 20291284]

約数ペア:

[(1, 20291284), (2, 10145642), (4, 5072821), (13, 1560868), (26, 780434), (52, 390217), (61, 332644), (122, 166322), (244, 83161), (793, 25588), (1586, 12794), (3172, 6397)]