21781700

素因数分解:

$2^2\times 5^2\times {\mathrm{67}}^1\times {\mathrm{3251}}^1$

素因数の和:3332

約数の個数: 36

約数和(自身を含む): 47986512

約数和(自身を除く): 26204812

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 67, 100, 134, 268, 335, 670, 1340, 1675, 3251, 3350, 6502, 6700, 13004, 16255, 32510, 65020, 81275, 162550, 217817, 325100, 435634, 871268, 1089085, 2178170, 4356340, 5445425, 10890850, 21781700]

約数ペア:

[(1, 21781700), (2, 10890850), (4, 5445425), (5, 4356340), (10, 2178170), (20, 1089085), (25, 871268), (50, 435634), (67, 325100), (100, 217817), (134, 162550), (268, 81275), (335, 65020), (670, 32510), (1340, 16255), (1675, 13004), (3251, 6700), (3350, 6502)]