20200675

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 30132000

約数和(自身を除く): 9931325

約数列:

[1, 5, 11, 17, 25, 29, 55, 85, 145, 149, 187, 275, 319, 425, 493, 725, 745, 935, 1595, 1639, 2465, 2533, 3725, 4321, 4675, 5423, 7975, 8195, 12325, 12665, 21605, 27115, 27863, 40975, 47531, 63325, 73457, 108025, 135575, 139315, 237655, 367285, 696575, 808027, 1188275, 1836425, 4040135, 20200675]

約数ペア:

[(1, 20200675), (5, 4040135), (11, 1836425), (17, 1188275), (25, 808027), (29, 696575), (55, 367285), (85, 237655), (145, 139315), (149, 135575), (187, 108025), (275, 73457), (319, 63325), (425, 47531), (493, 40975), (725, 27863), (745, 27115), (935, 21605), (1595, 12665), (1639, 12325), (2465, 8195), (2533, 7975), (3725, 5423), (4321, 4675)]