81089668

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 159159168

約数和(自身を除く): 78069500

約数列:

[1, 2, 4, 11, 22, 44, 71, 101, 142, 202, 257, 284, 404, 514, 781, 1028, 1111, 1562, 2222, 2827, 3124, 4444, 5654, 7171, 11308, 14342, 18247, 25957, 28684, 36494, 51914, 72988, 78881, 103828, 157762, 200717, 285527, 315524, 401434, 571054, 802868, 1142108, 1842947, 3685894, 7371788, 20272417, 40544834, 81089668]

約数ペア:

[(1, 81089668), (2, 40544834), (4, 20272417), (11, 7371788), (22, 3685894), (44, 1842947), (71, 1142108), (101, 802868), (142, 571054), (202, 401434), (257, 315524), (284, 285527), (404, 200717), (514, 157762), (781, 103828), (1028, 78881), (1111, 72988), (1562, 51914), (2222, 36494), (2827, 28684), (3124, 25957), (4444, 18247), (5654, 14342), (7171, 11308)]