19898890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{9521}}^1$

素因数の和:9558

約数の個数: 32

約数和(自身を含む): 41135040

約数和(自身を除く): 21236150

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 1045, 2090, 9521, 19042, 47605, 95210, 104731, 180899, 209462, 361798, 523655, 904495, 1047310, 1808990, 1989889, 3979778, 9949445, 19898890]

約数ペア:

[(1, 19898890), (2, 9949445), (5, 3979778), (10, 1989889), (11, 1808990), (19, 1047310), (22, 904495), (38, 523655), (55, 361798), (95, 209462), (110, 180899), (190, 104731), (209, 95210), (418, 47605), (1045, 19042), (2090, 9521)]