20172540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19777}}^1$

素因数の和:19806

約数の個数: 48

約数和(自身を含む): 59808672

約数和(自身を除く): 39636132

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 19777, 39554, 59331, 79108, 98885, 118662, 197770, 237324, 296655, 336209, 395540, 593310, 672418, 1008627, 1186620, 1344836, 1681045, 2017254, 3362090, 4034508, 5043135, 6724180, 10086270, 20172540]

約数ペア:

[(1, 20172540), (2, 10086270), (3, 6724180), (4, 5043135), (5, 4034508), (6, 3362090), (10, 2017254), (12, 1681045), (15, 1344836), (17, 1186620), (20, 1008627), (30, 672418), (34, 593310), (51, 395540), (60, 336209), (68, 296655), (85, 237324), (102, 197770), (170, 118662), (204, 98885), (255, 79108), (340, 59331), (510, 39554), (1020, 19777)]