201221870

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{123449}}^1$

素因数の和:123619

約数の個数: 16

約数和(自身を含む): 364424400

約数和(自身を除く): 163202530

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 123449, 246898, 617245, 1234490, 20122187, 40244374, 100610935, 201221870]

約数ペア:

[(1, 201221870), (2, 100610935), (5, 40244374), (10, 20122187), (163, 1234490), (326, 617245), (815, 246898), (1630, 123449)]