21783806

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43051}}^1$

素因数の和:43087

約数の個数: 16

約数和(自身を含む): 37196928

約数和(自身を除く): 15413122

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 43051, 86102, 473561, 947122, 990173, 1980346, 10891903, 21783806]

約数ペア:

[(1, 21783806), (2, 10891903), (11, 1980346), (22, 990173), (23, 947122), (46, 473561), (253, 86102), (506, 43051)]