21591045

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{68543}}^1$

素因数の和:68561

約数の個数: 24

約数和(自身を含む): 42771456

約数和(自身を除く): 21180411

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 68543, 205629, 342715, 479801, 616887, 1028145, 1439403, 2399005, 3084435, 4318209, 7197015, 21591045]

約数ペア:

[(1, 21591045), (3, 7197015), (5, 4318209), (7, 3084435), (9, 2399005), (15, 1439403), (21, 1028145), (35, 616887), (45, 479801), (63, 342715), (105, 205629), (315, 68543)]