20889495

素因数分解:

$3^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{521}}^1$

素因数の和:555

約数の個数: 56

約数和(自身を含む): 41079312

約数和(自身を除く): 20189817

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 243, 297, 405, 495, 521, 729, 891, 1215, 1485, 1563, 2605, 2673, 3645, 4455, 4689, 5731, 7815, 8019, 13365, 14067, 17193, 23445, 28655, 40095, 42201, 51579, 70335, 85965, 126603, 154737, 211005, 257895, 379809, 464211, 633015, 773685, 1392633, 1899045, 2321055, 4177899, 6963165, 20889495]

約数ペア:

[(1, 20889495), (3, 6963165), (5, 4177899), (9, 2321055), (11, 1899045), (15, 1392633), (27, 773685), (33, 633015), (45, 464211), (55, 379809), (81, 257895), (99, 211005), (135, 154737), (165, 126603), (243, 85965), (297, 70335), (405, 51579), (495, 42201), (521, 40095), (729, 28655), (891, 23445), (1215, 17193), (1485, 14067), (1563, 13365), (2605, 8019), (2673, 7815), (3645, 5731), (4455, 4689)]