399424465

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{40123}}^1$

素因数の和:40320

約数の個数: 16

約数和(自身を含む): 525784896

約数和(自身を除く): 126360431

約数列:

[1, 5, 11, 55, 181, 905, 1991, 9955, 40123, 200615, 441353, 2206765, 7262263, 36311315, 79884893, 399424465]

約数ペア:

[(1, 399424465), (5, 79884893), (11, 36311315), (55, 7262263), (181, 2206765), (905, 441353), (1991, 200615), (9955, 40123)]