398516764

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{1123}}^2$

素因数の和:2329

約数の個数: 18

約数和(自身を含む): 706861680

約数和(自身を除く): 308344916

約数列:

[1, 2, 4, 79, 158, 316, 1123, 2246, 4492, 88717, 177434, 354868, 1261129, 2522258, 5044516, 99629191, 199258382, 398516764]

約数ペア:

[(1, 398516764), (2, 199258382), (4, 99629191), (79, 5044516), (158, 2522258), (316, 1261129), (1123, 354868), (2246, 177434), (4492, 88717)]