18990228

素因数分解:

$2^2\times 3^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 46448640

約数和(自身を除く): 27458412

約数列:

[1, 2, 3, 4, 6, 12, 31, 62, 71, 93, 124, 142, 186, 213, 284, 372, 426, 719, 852, 1438, 2157, 2201, 2876, 4314, 4402, 6603, 8628, 8804, 13206, 22289, 26412, 44578, 51049, 66867, 89156, 102098, 133734, 153147, 204196, 267468, 306294, 612588, 1582519, 3165038, 4747557, 6330076, 9495114, 18990228]

約数ペア:

[(1, 18990228), (2, 9495114), (3, 6330076), (4, 4747557), (6, 3165038), (12, 1582519), (31, 612588), (62, 306294), (71, 267468), (93, 204196), (124, 153147), (142, 133734), (186, 102098), (213, 89156), (284, 66867), (372, 51049), (426, 44578), (719, 26412), (852, 22289), (1438, 13206), (2157, 8804), (2201, 8628), (2876, 6603), (4314, 4402)]