18985750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{571}}^1$

素因数の和:614

約数の個数: 64

約数和(自身を含む): 42831360

約数和(自身を除く): 23845610

約数列:

[1, 2, 5, 7, 10, 14, 19, 25, 35, 38, 50, 70, 95, 125, 133, 175, 190, 250, 266, 350, 475, 571, 665, 875, 950, 1142, 1330, 1750, 2375, 2855, 3325, 3997, 4750, 5710, 6650, 7994, 10849, 14275, 16625, 19985, 21698, 28550, 33250, 39970, 54245, 71375, 75943, 99925, 108490, 142750, 151886, 199850, 271225, 379715, 499625, 542450, 759430, 999250, 1356125, 1898575, 2712250, 3797150, 9492875, 18985750]

約数ペア:

[(1, 18985750), (2, 9492875), (5, 3797150), (7, 2712250), (10, 1898575), (14, 1356125), (19, 999250), (25, 759430), (35, 542450), (38, 499625), (50, 379715), (70, 271225), (95, 199850), (125, 151886), (133, 142750), (175, 108490), (190, 99925), (250, 75943), (266, 71375), (350, 54245), (475, 39970), (571, 33250), (665, 28550), (875, 21698), (950, 19985), (1142, 16625), (1330, 14275), (1750, 10849), (2375, 7994), (2855, 6650), (3325, 5710), (3997, 4750)]