21757216

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{52301}}^1$

素因数の和:52324

約数の個数: 24

約数和(自身を含む): 46130364

約数和(自身を除く): 24373148

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 52301, 104602, 209204, 418408, 679913, 836816, 1359826, 1673632, 2719652, 5439304, 10878608, 21757216]

約数ペア:

[(1, 21757216), (2, 10878608), (4, 5439304), (8, 2719652), (13, 1673632), (16, 1359826), (26, 836816), (32, 679913), (52, 418408), (104, 209204), (208, 104602), (416, 52301)]