21304395

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1439}}^1$

素因数の和:1504

約数の個数: 48

約数和(自身を含む): 43130880

約数和(自身を除く): 21826485

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 47, 63, 105, 141, 235, 315, 329, 423, 705, 987, 1439, 1645, 2115, 2961, 4317, 4935, 7195, 10073, 12951, 14805, 21585, 30219, 50365, 64755, 67633, 90657, 151095, 202899, 338165, 453285, 473431, 608697, 1014495, 1420293, 2367155, 3043485, 4260879, 7101465, 21304395]

約数ペア:

[(1, 21304395), (3, 7101465), (5, 4260879), (7, 3043485), (9, 2367155), (15, 1420293), (21, 1014495), (35, 608697), (45, 473431), (47, 453285), (63, 338165), (105, 202899), (141, 151095), (235, 90657), (315, 67633), (329, 64755), (423, 50365), (705, 30219), (987, 21585), (1439, 14805), (1645, 12951), (2115, 10073), (2961, 7195), (4317, 4935)]