21103615

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{2179}}^1$

素因数の和:2346

約数の個数: 16

約数和(自身を含む): 27468000

約数和(自身を除く): 6364385

約数列:

[1, 5, 13, 65, 149, 745, 1937, 2179, 9685, 10895, 28327, 141635, 324671, 1623355, 4220723, 21103615]

約数ペア:

[(1, 21103615), (5, 4220723), (13, 1623355), (65, 324671), (149, 141635), (745, 28327), (1937, 10895), (2179, 9685)]