19701969

素因数分解:

$3^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{1327}}^1$

素因数の和:1445

約数の個数: 24

約数和(自身を含む): 30883968

約数和(自身を除く): 11181999

約数列:

[1, 3, 7, 21, 49, 101, 147, 303, 707, 1327, 2121, 3981, 4949, 9289, 14847, 27867, 65023, 134027, 195069, 402081, 938189, 2814567, 6567323, 19701969]

約数ペア:

[(1, 19701969), (3, 6567323), (7, 2814567), (21, 938189), (49, 402081), (101, 195069), (147, 134027), (303, 65023), (707, 27867), (1327, 14847), (2121, 9289), (3981, 4949)]