21346840

素因数分解:

$2^3\times 5^1\times {\mathrm{533671}}^1$

素因数の和:533682

約数の個数: 16

約数和(自身を含む): 48030480

約数和(自身を除く): 26683640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 533671, 1067342, 2134684, 2668355, 4269368, 5336710, 10673420, 21346840]

約数ペア:

[(1, 21346840), (2, 10673420), (4, 5336710), (5, 4269368), (8, 2668355), (10, 2134684), (20, 1067342), (40, 533671)]