13188020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 29030400

約数和(自身を除く): 15842380

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 239, 310, 356, 445, 478, 620, 890, 956, 1195, 1780, 2390, 2759, 4780, 5518, 7409, 11036, 13795, 14818, 21271, 27590, 29636, 37045, 42542, 55180, 74090, 85084, 106355, 148180, 212710, 425420, 659401, 1318802, 2637604, 3297005, 6594010, 13188020]

約数ペア:

[(1, 13188020), (2, 6594010), (4, 3297005), (5, 2637604), (10, 1318802), (20, 659401), (31, 425420), (62, 212710), (89, 148180), (124, 106355), (155, 85084), (178, 74090), (239, 55180), (310, 42542), (356, 37045), (445, 29636), (478, 27590), (620, 21271), (890, 14818), (956, 13795), (1195, 11036), (1780, 7409), (2390, 5518), (2759, 4780)]