16165960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 38880000

約数和(自身を除く): 22714040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 89, 95, 152, 178, 190, 239, 356, 380, 445, 478, 712, 760, 890, 956, 1195, 1691, 1780, 1912, 2390, 3382, 3560, 4541, 4780, 6764, 8455, 9082, 9560, 13528, 16910, 18164, 21271, 22705, 33820, 36328, 42542, 45410, 67640, 85084, 90820, 106355, 170168, 181640, 212710, 404149, 425420, 808298, 850840, 1616596, 2020745, 3233192, 4041490, 8082980, 16165960]

約数ペア:

[(1, 16165960), (2, 8082980), (4, 4041490), (5, 3233192), (8, 2020745), (10, 1616596), (19, 850840), (20, 808298), (38, 425420), (40, 404149), (76, 212710), (89, 181640), (95, 170168), (152, 106355), (178, 90820), (190, 85084), (239, 67640), (356, 45410), (380, 42542), (445, 36328), (478, 33820), (712, 22705), (760, 21271), (890, 18164), (956, 16910), (1195, 13528), (1691, 9560), (1780, 9082), (1912, 8455), (2390, 6764), (3382, 4780), (3560, 4541)]