21682840

素因数分解:

$2^3\times 5^1\times {\mathrm{542071}}^1$

素因数の和:542082

約数の個数: 16

約数和(自身を含む): 48786480

約数和(自身を除く): 27103640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 542071, 1084142, 2168284, 2710355, 4336568, 5420710, 10841420, 21682840]

約数ペア:

[(1, 21682840), (2, 10841420), (4, 5420710), (5, 4336568), (8, 2710355), (10, 2168284), (20, 1084142), (40, 542071)]