21082360

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40543}}^1$

素因数の和:40567

約数の個数: 32

約数和(自身を含む): 51085440

約数和(自身を除く): 30003080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40543, 81086, 162172, 202715, 324344, 405430, 527059, 810860, 1054118, 1621720, 2108236, 2635295, 4216472, 5270590, 10541180, 21082360]

約数ペア:

[(1, 21082360), (2, 10541180), (4, 5270590), (5, 4216472), (8, 2635295), (10, 2108236), (13, 1621720), (20, 1054118), (26, 810860), (40, 527059), (52, 405430), (65, 324344), (104, 202715), (130, 162172), (260, 81086), (520, 40543)]