20509699

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1423}}^1$

素因数の和:1530

約数の個数: 16

約数和(自身を含む): 24606720

約数和(自身を除く): 4097021

約数列:

[1, 7, 29, 71, 203, 497, 1423, 2059, 9961, 14413, 41267, 101033, 288869, 707231, 2929957, 20509699]

約数ペア:

[(1, 20509699), (7, 2929957), (29, 707231), (71, 288869), (203, 101033), (497, 41267), (1423, 14413), (2059, 9961)]