28477911

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 50282496

約数和(自身を除く): 21804585

約数列:

[1, 3, 7, 11, 21, 33, 43, 47, 61, 77, 129, 141, 183, 231, 301, 329, 427, 473, 517, 671, 903, 987, 1281, 1419, 1551, 2013, 2021, 2623, 2867, 3311, 3619, 4697, 6063, 7869, 8601, 9933, 10857, 14091, 14147, 18361, 20069, 22231, 28853, 31537, 42441, 55083, 60207, 66693, 86559, 94611, 123281, 155617, 201971, 220759, 369843, 466851, 605913, 662277, 862967, 1356091, 2588901, 4068273, 9492637, 28477911]

約数ペア:

[(1, 28477911), (3, 9492637), (7, 4068273), (11, 2588901), (21, 1356091), (33, 862967), (43, 662277), (47, 605913), (61, 466851), (77, 369843), (129, 220759), (141, 201971), (183, 155617), (231, 123281), (301, 94611), (329, 86559), (427, 66693), (473, 60207), (517, 55083), (671, 42441), (903, 31537), (987, 28853), (1281, 22231), (1419, 20069), (1551, 18361), (2013, 14147), (2021, 14091), (2623, 10857), (2867, 9933), (3311, 8601), (3619, 7869), (4697, 6063)]