19975809

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{32801}}^1$

素因数の和:32840

約数の個数: 16

約数和(自身を含む): 31489920

約数和(自身を除く): 11514111

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 32801, 98403, 229607, 688821, 951229, 2853687, 6658603, 19975809]

約数ペア:

[(1, 19975809), (3, 6658603), (7, 2853687), (21, 951229), (29, 688821), (87, 229607), (203, 98403), (609, 32801)]