20618906

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{617}}^1$

素因数の和:675

約数の個数: 48

約数和(自身を含む): 40580352

約数和(自身を除く): 19961446

約数列:

[1, 2, 7, 11, 14, 22, 31, 49, 62, 77, 98, 154, 217, 341, 434, 539, 617, 682, 1078, 1234, 1519, 2387, 3038, 4319, 4774, 6787, 8638, 13574, 16709, 19127, 30233, 33418, 38254, 47509, 60466, 95018, 133889, 210397, 267778, 332563, 420794, 665126, 937223, 1472779, 1874446, 2945558, 10309453, 20618906]

約数ペア:

[(1, 20618906), (2, 10309453), (7, 2945558), (11, 1874446), (14, 1472779), (22, 937223), (31, 665126), (49, 420794), (62, 332563), (77, 267778), (98, 210397), (154, 133889), (217, 95018), (341, 60466), (434, 47509), (539, 38254), (617, 33418), (682, 30233), (1078, 19127), (1234, 16709), (1519, 13574), (2387, 8638), (3038, 6787), (4319, 4774)]