20702680

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{1483}}^1$

素因数の和:1843

約数の個数: 32

約数和(自身を含む): 46746000

約数和(自身を除く): 26043320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1483, 1745, 2792, 2966, 3490, 5932, 6980, 7415, 11864, 13960, 14830, 29660, 59320, 517567, 1035134, 2070268, 2587835, 4140536, 5175670, 10351340, 20702680]

約数ペア:

[(1, 20702680), (2, 10351340), (4, 5175670), (5, 4140536), (8, 2587835), (10, 2070268), (20, 1035134), (40, 517567), (349, 59320), (698, 29660), (1396, 14830), (1483, 13960), (1745, 11864), (2792, 7415), (2966, 6980), (3490, 5932)]