20338731

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4547}}^1$

素因数の和:4631

約数の個数: 24

約数和(自身を含む): 34055424

約数和(自身を除く): 13716693

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4547, 13641, 31829, 40923, 95487, 286461, 322837, 968511, 2259859, 2905533, 6779577, 20338731]

約数ペア:

[(1, 20338731), (3, 6779577), (7, 2905533), (9, 2259859), (21, 968511), (63, 322837), (71, 286461), (213, 95487), (497, 40923), (639, 31829), (1491, 13641), (4473, 4547)]