21191580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117731}}^1$

素因数の和:117746

約数の個数: 36

約数和(自身を含む): 64281672

約数和(自身を除く): 43090092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117731, 235462, 353193, 470924, 588655, 706386, 1059579, 1177310, 1412772, 1765965, 2119158, 2354620, 3531930, 4238316, 5297895, 7063860, 10595790, 21191580]

約数ペア:

[(1, 21191580), (2, 10595790), (3, 7063860), (4, 5297895), (5, 4238316), (6, 3531930), (9, 2354620), (10, 2119158), (12, 1765965), (15, 1412772), (18, 1177310), (20, 1059579), (30, 706386), (36, 588655), (45, 470924), (60, 353193), (90, 235462), (180, 117731)]