18974000

素因数分解:

$2^4\times 5^3\times {\mathrm{53}}^1\times {\mathrm{179}}^1$

素因数の和:255

約数の個数: 80

約数和(自身を含む): 47005920

約数和(自身を除く): 28031920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 53, 80, 100, 106, 125, 179, 200, 212, 250, 265, 358, 400, 424, 500, 530, 716, 848, 895, 1000, 1060, 1325, 1432, 1790, 2000, 2120, 2650, 2864, 3580, 4240, 4475, 5300, 6625, 7160, 8950, 9487, 10600, 13250, 14320, 17900, 18974, 21200, 22375, 26500, 35800, 37948, 44750, 47435, 53000, 71600, 75896, 89500, 94870, 106000, 151792, 179000, 189740, 237175, 358000, 379480, 474350, 758960, 948700, 1185875, 1897400, 2371750, 3794800, 4743500, 9487000, 18974000]

約数ペア:

[(1, 18974000), (2, 9487000), (4, 4743500), (5, 3794800), (8, 2371750), (10, 1897400), (16, 1185875), (20, 948700), (25, 758960), (40, 474350), (50, 379480), (53, 358000), (80, 237175), (100, 189740), (106, 179000), (125, 151792), (179, 106000), (200, 94870), (212, 89500), (250, 75896), (265, 71600), (358, 53000), (400, 47435), (424, 44750), (500, 37948), (530, 35800), (716, 26500), (848, 22375), (895, 21200), (1000, 18974), (1060, 17900), (1325, 14320), (1432, 13250), (1790, 10600), (2000, 9487), (2120, 8950), (2650, 7160), (2864, 6625), (3580, 5300), (4240, 4475)]