21140625

素因数分解:

$3^1\times 5^6\times {\mathrm{11}}^1\times {\mathrm{41}}^1$

素因数の和:85

約数の個数: 56

約数和(自身を含む): 39374496

約数和(自身を除く): 18233871

約数列:

[1, 3, 5, 11, 15, 25, 33, 41, 55, 75, 123, 125, 165, 205, 275, 375, 451, 615, 625, 825, 1025, 1353, 1375, 1875, 2255, 3075, 3125, 4125, 5125, 6765, 6875, 9375, 11275, 15375, 15625, 20625, 25625, 33825, 34375, 46875, 56375, 76875, 103125, 128125, 169125, 171875, 281875, 384375, 515625, 640625, 845625, 1409375, 1921875, 4228125, 7046875, 21140625]

約数ペア:

[(1, 21140625), (3, 7046875), (5, 4228125), (11, 1921875), (15, 1409375), (25, 845625), (33, 640625), (41, 515625), (55, 384375), (75, 281875), (123, 171875), (125, 169125), (165, 128125), (205, 103125), (275, 76875), (375, 56375), (451, 46875), (615, 34375), (625, 33825), (825, 25625), (1025, 20625), (1353, 15625), (1375, 15375), (1875, 11275), (2255, 9375), (3075, 6875), (3125, 6765), (4125, 5125)]