20512782339

素因数分解:

$3^1\times 7^2\times {\mathrm{1279}}^1\times {\mathrm{109103}}^1$

素因数の和:110399

約数の個数: 24

約数和(自身を含む): 31840911360

約数和(自身を除く): 11328129021

約数列:

[1, 3, 7, 21, 49, 147, 1279, 3837, 8953, 26859, 62671, 109103, 188013, 327309, 763721, 2291163, 5346047, 16038141, 139542737, 418628211, 976799159, 2930397477, 6837594113, 20512782339]

約数ペア:

[(1, 20512782339), (3, 6837594113), (7, 2930397477), (21, 976799159), (49, 418628211), (147, 139542737), (1279, 16038141), (3837, 5346047), (8953, 2291163), (26859, 763721), (62671, 327309), (109103, 188013)]