21780542

素因数分解:

$2^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{10303}}^1$

素因数の和:10463

約数の個数: 16

約数和(自身を含む): 37588992

約数和(自身を除く): 15808450

約数列:

[1, 2, 7, 14, 151, 302, 1057, 2114, 10303, 20606, 72121, 144242, 1555753, 3111506, 10890271, 21780542]

約数ペア:

[(1, 21780542), (2, 10890271), (7, 3111506), (14, 1555753), (151, 144242), (302, 72121), (1057, 20606), (2114, 10303)]