21478840

素因数分解:

$2^3\times 5^1\times {\mathrm{536971}}^1$

素因数の和:536982

約数の個数: 16

約数和(自身を含む): 48327480

約数和(自身を除く): 26848640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 536971, 1073942, 2147884, 2684855, 4295768, 5369710, 10739420, 21478840]

約数ペア:

[(1, 21478840), (2, 10739420), (4, 5369710), (5, 4295768), (8, 2684855), (10, 2147884), (20, 1073942), (40, 536971)]