78235640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{279413}}^1$

素因数の和:279431

約数の個数: 32

約数和(自身を含む): 201178080

約数和(自身を除く): 122942440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 279413, 558826, 1117652, 1397065, 1955891, 2235304, 2794130, 3911782, 5588260, 7823564, 9779455, 11176520, 15647128, 19558910, 39117820, 78235640]

約数ペア:

[(1, 78235640), (2, 39117820), (4, 19558910), (5, 15647128), (7, 11176520), (8, 9779455), (10, 7823564), (14, 5588260), (20, 3911782), (28, 2794130), (35, 2235304), (40, 1955891), (56, 1397065), (70, 1117652), (140, 558826), (280, 279413)]