21529713

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:213

約数の個数: 32

約数和(自身を含む): 31021056

約数和(自身を除く): 9491343

約数列:

[1, 3, 43, 47, 53, 67, 129, 141, 159, 201, 2021, 2279, 2491, 2881, 3149, 3551, 6063, 6837, 7473, 8643, 9447, 10653, 107113, 135407, 152693, 166897, 321339, 406221, 458079, 500691, 7176571, 21529713]

約数ペア:

[(1, 21529713), (3, 7176571), (43, 500691), (47, 458079), (53, 406221), (67, 321339), (129, 166897), (141, 152693), (159, 135407), (201, 107113), (2021, 10653), (2279, 9447), (2491, 8643), (2881, 7473), (3149, 6837), (3551, 6063)]