638059473

素因数分解:

$3^2\times {\mathrm{131}}^1\times {\mathrm{271}}^1\times {\mathrm{1997}}^1$

素因数の和:2405

約数の個数: 24

約数和(自身を含む): 932570496

約数和(自身を除く): 294511023

約数列:

[1, 3, 9, 131, 271, 393, 813, 1179, 1997, 2439, 5991, 17973, 35501, 106503, 261607, 319509, 541187, 784821, 1623561, 2354463, 4870683, 70895497, 212686491, 638059473]

約数ペア:

[(1, 638059473), (3, 212686491), (9, 70895497), (131, 4870683), (271, 2354463), (393, 1623561), (813, 784821), (1179, 541187), (1997, 319509), (2439, 261607), (5991, 106503), (17973, 35501)]