19771048

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1129}}^1$

素因数の和:1345

約数の個数: 32

約数和(自身を含む): 40680000

約数和(自身を除く): 20908952

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 199, 398, 796, 1129, 1592, 2189, 2258, 4378, 4516, 8756, 9032, 12419, 17512, 24838, 49676, 99352, 224671, 449342, 898684, 1797368, 2471381, 4942762, 9885524, 19771048]

約数ペア:

[(1, 19771048), (2, 9885524), (4, 4942762), (8, 2471381), (11, 1797368), (22, 898684), (44, 449342), (88, 224671), (199, 99352), (398, 49676), (796, 24838), (1129, 17512), (1592, 12419), (2189, 9032), (2258, 8756), (4378, 4516)]