21155848

素因数分解:

$2^3\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1861}}^1$

素因数の和:1910

約数の個数: 48

約数和(自身を含む): 47760300

約数和(自身を除く): 26604452

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 49, 56, 58, 98, 116, 196, 203, 232, 392, 406, 812, 1421, 1624, 1861, 2842, 3722, 5684, 7444, 11368, 13027, 14888, 26054, 52108, 53969, 91189, 104216, 107938, 182378, 215876, 364756, 377783, 431752, 729512, 755566, 1511132, 2644481, 3022264, 5288962, 10577924, 21155848]

約数ペア:

[(1, 21155848), (2, 10577924), (4, 5288962), (7, 3022264), (8, 2644481), (14, 1511132), (28, 755566), (29, 729512), (49, 431752), (56, 377783), (58, 364756), (98, 215876), (116, 182378), (196, 107938), (203, 104216), (232, 91189), (392, 53969), (406, 52108), (812, 26054), (1421, 14888), (1624, 13027), (1861, 11368), (2842, 7444), (3722, 5684)]