19996500

素因数分解:

$2^2\times 3^1\times 5^3\times {\mathrm{13331}}^1$

素因数の和:13353

約数の個数: 48

約数和(自身を含む): 58234176

約数和(自身を除く): 38237676

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 125, 150, 250, 300, 375, 500, 750, 1500, 13331, 26662, 39993, 53324, 66655, 79986, 133310, 159972, 199965, 266620, 333275, 399930, 666550, 799860, 999825, 1333100, 1666375, 1999650, 3332750, 3999300, 4999125, 6665500, 9998250, 19996500]

約数ペア:

[(1, 19996500), (2, 9998250), (3, 6665500), (4, 4999125), (5, 3999300), (6, 3332750), (10, 1999650), (12, 1666375), (15, 1333100), (20, 999825), (25, 799860), (30, 666550), (50, 399930), (60, 333275), (75, 266620), (100, 199965), (125, 159972), (150, 133310), (250, 79986), (300, 66655), (375, 53324), (500, 39993), (750, 26662), (1500, 13331)]