11921480

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{607}}^1$

素因数の和:1109

約数の個数: 32

約数和(自身を含む): 26922240

約数和(自身を除く): 15000760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 607, 982, 1214, 1964, 2428, 2455, 3035, 3928, 4856, 4910, 6070, 9820, 12140, 19640, 24280, 298037, 596074, 1192148, 1490185, 2384296, 2980370, 5960740, 11921480]

約数ペア:

[(1, 11921480), (2, 5960740), (4, 2980370), (5, 2384296), (8, 1490185), (10, 1192148), (20, 596074), (40, 298037), (491, 24280), (607, 19640), (982, 12140), (1214, 9820), (1964, 6070), (2428, 4910), (2455, 4856), (3035, 3928)]