19998500

素因数分解:

$2^2\times 5^3\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:126

約数の個数: 96

約数和(自身を含む): 47803392

約数和(自身を除く): 27804892

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 37, 46, 47, 50, 74, 92, 94, 100, 115, 125, 148, 185, 188, 230, 235, 250, 370, 460, 470, 500, 575, 740, 851, 925, 940, 1081, 1150, 1175, 1702, 1739, 1850, 2162, 2300, 2350, 2875, 3404, 3478, 3700, 4255, 4324, 4625, 4700, 5405, 5750, 5875, 6956, 8510, 8695, 9250, 10810, 11500, 11750, 17020, 17390, 18500, 21275, 21620, 23500, 27025, 34780, 39997, 42550, 43475, 54050, 79994, 85100, 86950, 106375, 108100, 135125, 159988, 173900, 199985, 212750, 217375, 270250, 399970, 425500, 434750, 540500, 799940, 869500, 999925, 1999850, 3999700, 4999625, 9999250, 19998500]

約数ペア:

[(1, 19998500), (2, 9999250), (4, 4999625), (5, 3999700), (10, 1999850), (20, 999925), (23, 869500), (25, 799940), (37, 540500), (46, 434750), (47, 425500), (50, 399970), (74, 270250), (92, 217375), (94, 212750), (100, 199985), (115, 173900), (125, 159988), (148, 135125), (185, 108100), (188, 106375), (230, 86950), (235, 85100), (250, 79994), (370, 54050), (460, 43475), (470, 42550), (500, 39997), (575, 34780), (740, 27025), (851, 23500), (925, 21620), (940, 21275), (1081, 18500), (1150, 17390), (1175, 17020), (1702, 11750), (1739, 11500), (1850, 10810), (2162, 9250), (2300, 8695), (2350, 8510), (2875, 6956), (3404, 5875), (3478, 5750), (3700, 5405), (4255, 4700), (4324, 4625)]