21589360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20759}}^1$

素因数の和:20785

約数の個数: 40

約数和(自身を含む): 54059040

約数和(自身を除く): 32469680

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 20759, 41518, 83036, 103795, 166072, 207590, 269867, 332144, 415180, 539734, 830360, 1079468, 1349335, 1660720, 2158936, 2698670, 4317872, 5397340, 10794680, 21589360]

約数ペア:

[(1, 21589360), (2, 10794680), (4, 5397340), (5, 4317872), (8, 2698670), (10, 2158936), (13, 1660720), (16, 1349335), (20, 1079468), (26, 830360), (40, 539734), (52, 415180), (65, 332144), (80, 269867), (104, 207590), (130, 166072), (208, 103795), (260, 83036), (520, 41518), (1040, 20759)]