19996460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8263}}^1$

素因数の和:8294

約数の個数: 36

約数和(自身を含む): 46162704

約数和(自身を除く): 26166244

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8263, 16526, 33052, 41315, 82630, 90893, 165260, 181786, 363572, 454465, 908930, 999823, 1817860, 1999646, 3999292, 4999115, 9998230, 19996460]

約数ペア:

[(1, 19996460), (2, 9998230), (4, 4999115), (5, 3999292), (10, 1999646), (11, 1817860), (20, 999823), (22, 908930), (44, 454465), (55, 363572), (110, 181786), (121, 165260), (220, 90893), (242, 82630), (484, 41315), (605, 33052), (1210, 16526), (2420, 8263)]