21904465

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{449}}^1\times {\mathrm{887}}^1$

素因数の和:1352

約数の個数: 16

約数和(自身を含む): 28771200

約数和(自身を除く): 6866735

約数列:

[1, 5, 11, 55, 449, 887, 2245, 4435, 4939, 9757, 24695, 48785, 398263, 1991315, 4380893, 21904465]

約数ペア:

[(1, 21904465), (5, 4380893), (11, 1991315), (55, 398263), (449, 48785), (887, 24695), (2245, 9757), (4435, 4939)]