219994940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{90907}}^1$

素因数の和:90938

約数の個数: 36

約数和(自身を含む): 507812088

約数和(自身を除く): 287817148

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 90907, 181814, 363628, 454535, 909070, 999977, 1818140, 1999954, 3999908, 4999885, 9999770, 10999747, 19999540, 21999494, 43998988, 54998735, 109997470, 219994940]

約数ペア:

[(1, 219994940), (2, 109997470), (4, 54998735), (5, 43998988), (10, 21999494), (11, 19999540), (20, 10999747), (22, 9999770), (44, 4999885), (55, 3999908), (110, 1999954), (121, 1818140), (220, 999977), (242, 909070), (484, 454535), (605, 363628), (1210, 181814), (2420, 90907)]