21056360

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{40493}}^1$

素因数の和:40517

約数の個数: 32

約数和(自身を含む): 51022440

約数和(自身を除く): 29966080

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 40493, 80986, 161972, 202465, 323944, 404930, 526409, 809860, 1052818, 1619720, 2105636, 2632045, 4211272, 5264090, 10528180, 21056360]

約数ペア:

[(1, 21056360), (2, 10528180), (4, 5264090), (5, 4211272), (8, 2632045), (10, 2105636), (13, 1619720), (20, 1052818), (26, 809860), (40, 526409), (52, 404930), (65, 323944), (104, 202465), (130, 161972), (260, 80986), (520, 40493)]