21385288

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1627}}^1$

素因数の和:1717

約数の個数: 32

約数和(自身を含む): 42197760

約数和(自身を除く): 20812472

約数列:

[1, 2, 4, 8, 31, 53, 62, 106, 124, 212, 248, 424, 1627, 1643, 3254, 3286, 6508, 6572, 13016, 13144, 50437, 86231, 100874, 172462, 201748, 344924, 403496, 689848, 2673161, 5346322, 10692644, 21385288]

約数ペア:

[(1, 21385288), (2, 10692644), (4, 5346322), (8, 2673161), (31, 689848), (53, 403496), (62, 344924), (106, 201748), (124, 172462), (212, 100874), (248, 86231), (424, 50437), (1627, 13144), (1643, 13016), (3254, 6572), (3286, 6508)]