208489725

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:539

約数の個数: 72

約数和(自身を含む): 391832064

約数和(自身を除く): 183342339

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 71, 75, 93, 155, 213, 225, 279, 355, 421, 465, 639, 775, 1065, 1263, 1395, 1775, 2105, 2201, 2325, 3195, 3789, 5325, 6315, 6603, 6975, 10525, 11005, 13051, 15975, 18945, 19809, 29891, 31575, 33015, 39153, 55025, 65255, 89673, 94725, 99045, 117459, 149455, 165075, 195765, 269019, 326275, 448365, 495225, 587295, 747275, 926621, 978825, 1345095, 2241825, 2779863, 2936475, 4633105, 6725475, 8339589, 13899315, 23165525, 41697945, 69496575, 208489725]

約数ペア:

[(1, 208489725), (3, 69496575), (5, 41697945), (9, 23165525), (15, 13899315), (25, 8339589), (31, 6725475), (45, 4633105), (71, 2936475), (75, 2779863), (93, 2241825), (155, 1345095), (213, 978825), (225, 926621), (279, 747275), (355, 587295), (421, 495225), (465, 448365), (639, 326275), (775, 269019), (1065, 195765), (1263, 165075), (1395, 149455), (1775, 117459), (2105, 99045), (2201, 94725), (2325, 89673), (3195, 65255), (3789, 55025), (5325, 39153), (6315, 33015), (6603, 31575), (6975, 29891), (10525, 19809), (11005, 18945), (13051, 15975)]