209519991

素因数分解:

$3^2\times {\mathrm{137}}^1\times {\mathrm{251}}^1\times {\mathrm{677}}^1$

素因数の和:1071

約数の個数: 24

約数和(自身を含む): 306515664

約数和(自身を除く): 96995673

約数列:

[1, 3, 9, 137, 251, 411, 677, 753, 1233, 2031, 2259, 6093, 34387, 92749, 103161, 169927, 278247, 309483, 509781, 834741, 1529343, 23279999, 69839997, 209519991]

約数ペア:

[(1, 209519991), (3, 69839997), (9, 23279999), (137, 1529343), (251, 834741), (411, 509781), (677, 309483), (753, 278247), (1233, 169927), (2031, 103161), (2259, 92749), (6093, 34387)]