20312325

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{283}}^1$

素因数の和:339

約数の個数: 72

約数和(自身を含む): 41202720

約数和(自身を除く): 20890395

約数列:

[1, 3, 5, 9, 11, 15, 25, 29, 33, 45, 55, 75, 87, 99, 145, 165, 225, 261, 275, 283, 319, 435, 495, 725, 825, 849, 957, 1305, 1415, 1595, 2175, 2475, 2547, 2871, 3113, 4245, 4785, 6525, 7075, 7975, 8207, 9339, 12735, 14355, 15565, 21225, 23925, 24621, 28017, 41035, 46695, 63675, 71775, 73863, 77825, 90277, 123105, 140085, 205175, 233475, 270831, 369315, 451385, 615525, 700425, 812493, 1354155, 1846575, 2256925, 4062465, 6770775, 20312325]

約数ペア:

[(1, 20312325), (3, 6770775), (5, 4062465), (9, 2256925), (11, 1846575), (15, 1354155), (25, 812493), (29, 700425), (33, 615525), (45, 451385), (55, 369315), (75, 270831), (87, 233475), (99, 205175), (145, 140085), (165, 123105), (225, 90277), (261, 77825), (275, 73863), (283, 71775), (319, 63675), (435, 46695), (495, 41035), (725, 28017), (825, 24621), (849, 23925), (957, 21225), (1305, 15565), (1415, 14355), (1595, 12735), (2175, 9339), (2475, 8207), (2547, 7975), (2871, 7075), (3113, 6525), (4245, 4785)]