31040840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{18047}}^1$

素因数の和:18101

約数の個数: 32

約数和(自身を含む): 71470080

約数和(自身を除く): 40429240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 18047, 36094, 72188, 90235, 144376, 180470, 360940, 721880, 776021, 1552042, 3104084, 3880105, 6208168, 7760210, 15520420, 31040840]

約数ペア:

[(1, 31040840), (2, 15520420), (4, 7760210), (5, 6208168), (8, 3880105), (10, 3104084), (20, 1552042), (40, 776021), (43, 721880), (86, 360940), (172, 180470), (215, 144376), (344, 90235), (430, 72188), (860, 36094), (1720, 18047)]