18986840

素因数分解:

$2^3\times 5^1\times {\mathrm{474671}}^1$

素因数の和:474682

約数の個数: 16

約数和(自身を含む): 42720480

約数和(自身を除く): 23733640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 474671, 949342, 1898684, 2373355, 3797368, 4746710, 9493420, 18986840]

約数ペア:

[(1, 18986840), (2, 9493420), (4, 4746710), (5, 3797368), (8, 2373355), (10, 1898684), (20, 949342), (40, 474671)]