21027909

素因数分解:

$3^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2699}}^1$

素因数の和:2769

約数の個数: 24

約数和(自身を含む): 33242400

約数和(自身を除く): 12214491

約数列:

[1, 3, 7, 21, 49, 53, 147, 159, 371, 1113, 2597, 2699, 7791, 8097, 18893, 56679, 132251, 143047, 396753, 429141, 1001329, 3003987, 7009303, 21027909]

約数ペア:

[(1, 21027909), (3, 7009303), (7, 3003987), (21, 1001329), (49, 429141), (53, 396753), (147, 143047), (159, 132251), (371, 56679), (1113, 18893), (2597, 8097), (2699, 7791)]