21179715

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{269}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 35380800

約数和(自身を除く): 14201085

約数列:

[1, 3, 5, 15, 29, 87, 145, 181, 269, 435, 543, 807, 905, 1345, 2715, 4035, 5249, 7801, 15747, 23403, 26245, 39005, 48689, 78735, 117015, 146067, 243445, 730335, 1411981, 4235943, 7059905, 21179715]

約数ペア:

[(1, 21179715), (3, 7059905), (5, 4235943), (15, 1411981), (29, 730335), (87, 243445), (145, 146067), (181, 117015), (269, 78735), (435, 48689), (543, 39005), (807, 26245), (905, 23403), (1345, 15747), (2715, 7801), (4035, 5249)]