21657608

素因数分解:

$2^3\times 7^2\times {\mathrm{55249}}^1$

素因数の和:55269

約数の個数: 24

約数和(自身を含む): 47238750

約数和(自身を除く): 25581142

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 55249, 110498, 220996, 386743, 441992, 773486, 1546972, 2707201, 3093944, 5414402, 10828804, 21657608]

約数ペア:

[(1, 21657608), (2, 10828804), (4, 5414402), (7, 3093944), (8, 2707201), (14, 1546972), (28, 773486), (49, 441992), (56, 386743), (98, 220996), (196, 110498), (392, 55249)]