21546675

素因数分解:

$3^3\times 5^2\times {\mathrm{137}}^1\times {\mathrm{233}}^1$

素因数の和:389

約数の個数: 48

約数和(自身を含む): 40042080

約数和(自身を除く): 18495405

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 137, 225, 233, 411, 675, 685, 699, 1165, 1233, 2055, 2097, 3425, 3495, 3699, 5825, 6165, 6291, 10275, 10485, 17475, 18495, 30825, 31455, 31921, 52425, 92475, 95763, 157275, 159605, 287289, 478815, 798025, 861867, 1436445, 2394075, 4309335, 7182225, 21546675]

約数ペア:

[(1, 21546675), (3, 7182225), (5, 4309335), (9, 2394075), (15, 1436445), (25, 861867), (27, 798025), (45, 478815), (75, 287289), (135, 159605), (137, 157275), (225, 95763), (233, 92475), (411, 52425), (675, 31921), (685, 31455), (699, 30825), (1165, 18495), (1233, 17475), (2055, 10485), (2097, 10275), (3425, 6291), (3495, 6165), (3699, 5825)]