18439280

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{2777}}^1$

素因数の和:2873

約数の個数: 40

約数和(自身を含む): 43403472

約数和(自身を除く): 24964192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 2777, 3320, 5554, 6640, 11108, 13885, 22216, 27770, 44432, 55540, 111080, 222160, 230491, 460982, 921964, 1152455, 1843928, 2304910, 3687856, 4609820, 9219640, 18439280]

約数ペア:

[(1, 18439280), (2, 9219640), (4, 4609820), (5, 3687856), (8, 2304910), (10, 1843928), (16, 1152455), (20, 921964), (40, 460982), (80, 230491), (83, 222160), (166, 111080), (332, 55540), (415, 44432), (664, 27770), (830, 22216), (1328, 13885), (1660, 11108), (2777, 6640), (3320, 5554)]