16420580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{739}}^1$

素因数の和:860

約数の個数: 48

約数和(自身を含む): 38041920

約数和(自身を除く): 21621340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 202, 220, 404, 505, 739, 1010, 1111, 1478, 2020, 2222, 2956, 3695, 4444, 5555, 7390, 8129, 11110, 14780, 16258, 22220, 32516, 40645, 74639, 81290, 149278, 162580, 298556, 373195, 746390, 821029, 1492780, 1642058, 3284116, 4105145, 8210290, 16420580]

約数ペア:

[(1, 16420580), (2, 8210290), (4, 4105145), (5, 3284116), (10, 1642058), (11, 1492780), (20, 821029), (22, 746390), (44, 373195), (55, 298556), (101, 162580), (110, 149278), (202, 81290), (220, 74639), (404, 40645), (505, 32516), (739, 22220), (1010, 16258), (1111, 14780), (1478, 11110), (2020, 8129), (2222, 7390), (2956, 5555), (3695, 4444)]