21556568

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{487}}^1\times {\mathrm{503}}^1$

素因数の和:1007

約数の個数: 32

約数和(自身を含む): 44271360

約数和(自身を除く): 22714792

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 487, 503, 974, 1006, 1948, 2012, 3896, 4024, 5357, 5533, 10714, 11066, 21428, 22132, 42856, 44264, 244961, 489922, 979844, 1959688, 2694571, 5389142, 10778284, 21556568]

約数ペア:

[(1, 21556568), (2, 10778284), (4, 5389142), (8, 2694571), (11, 1959688), (22, 979844), (44, 489922), (88, 244961), (487, 44264), (503, 42856), (974, 22132), (1006, 21428), (1948, 11066), (2012, 10714), (3896, 5533), (4024, 5357)]