201212121620

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{15549623}}^1$

素因数の和:15550279

約数の個数: 24

約数和(自身を含む): 423198566784

約数和(自身を除く): 221986445164

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 2588, 3235, 6470, 12940, 15549623, 31099246, 62198492, 77748115, 155496230, 310992460, 10060606081, 20121212162, 40242424324, 50303030405, 100606060810, 201212121620]

約数ペア:

[(1, 201212121620), (2, 100606060810), (4, 50303030405), (5, 40242424324), (10, 20121212162), (20, 10060606081), (647, 310992460), (1294, 155496230), (2588, 77748115), (3235, 62198492), (6470, 31099246), (12940, 15549623)]