21454490

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{167}}^1\times {\mathrm{443}}^1$

素因数の和:646

約数の個数: 32

約数和(自身を含む): 40279680

約数和(自身を除く): 18825190

約数列:

[1, 2, 5, 10, 29, 58, 145, 167, 290, 334, 443, 835, 886, 1670, 2215, 4430, 4843, 9686, 12847, 24215, 25694, 48430, 64235, 73981, 128470, 147962, 369905, 739810, 2145449, 4290898, 10727245, 21454490]

約数ペア:

[(1, 21454490), (2, 10727245), (5, 4290898), (10, 2145449), (29, 739810), (58, 369905), (145, 147962), (167, 128470), (290, 73981), (334, 64235), (443, 48430), (835, 25694), (886, 24215), (1670, 12847), (2215, 9686), (4430, 4843)]