21257250

素因数分解:

$2^1\times 3^1\times 5^3\times 7^1\times {\mathrm{4049}}^1$

素因数の和:4076

約数の個数: 64

約数和(自身を含む): 60652800

約数和(自身を除く): 39395550

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70, 75, 105, 125, 150, 175, 210, 250, 350, 375, 525, 750, 875, 1050, 1750, 2625, 4049, 5250, 8098, 12147, 20245, 24294, 28343, 40490, 56686, 60735, 85029, 101225, 121470, 141715, 170058, 202450, 283430, 303675, 425145, 506125, 607350, 708575, 850290, 1012250, 1417150, 1518375, 2125725, 3036750, 3542875, 4251450, 7085750, 10628625, 21257250]

約数ペア:

[(1, 21257250), (2, 10628625), (3, 7085750), (5, 4251450), (6, 3542875), (7, 3036750), (10, 2125725), (14, 1518375), (15, 1417150), (21, 1012250), (25, 850290), (30, 708575), (35, 607350), (42, 506125), (50, 425145), (70, 303675), (75, 283430), (105, 202450), (125, 170058), (150, 141715), (175, 121470), (210, 101225), (250, 85029), (350, 60735), (375, 56686), (525, 40490), (750, 28343), (875, 24294), (1050, 20245), (1750, 12147), (2625, 8098), (4049, 5250)]