21510680

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4759}}^1$

素因数の和:4883

約数の個数: 32

約数和(自身を含む): 48837600

約数和(自身を除く): 27326920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 4759, 9518, 19036, 23795, 38072, 47590, 95180, 190360, 537767, 1075534, 2151068, 2688835, 4302136, 5377670, 10755340, 21510680]

約数ペア:

[(1, 21510680), (2, 10755340), (4, 5377670), (5, 4302136), (8, 2688835), (10, 2151068), (20, 1075534), (40, 537767), (113, 190360), (226, 95180), (452, 47590), (565, 38072), (904, 23795), (1130, 19036), (2260, 9518), (4520, 4759)]