20368125

素因数分解:

$3^3\times 5^4\times {\mathrm{17}}^1\times {\mathrm{71}}^1$

素因数の和:117

約数の個数: 80

約数和(自身を含む): 40487040

約数和(自身を除く): 20118915

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 71, 75, 85, 125, 135, 153, 213, 225, 255, 355, 375, 425, 459, 625, 639, 675, 765, 1065, 1125, 1207, 1275, 1775, 1875, 1917, 2125, 2295, 3195, 3375, 3621, 3825, 5325, 5625, 6035, 6375, 8875, 9585, 10625, 10863, 11475, 15975, 16875, 18105, 19125, 26625, 30175, 31875, 32589, 44375, 47925, 54315, 57375, 79875, 90525, 95625, 133125, 150875, 162945, 239625, 271575, 286875, 399375, 452625, 754375, 814725, 1198125, 1357875, 2263125, 4073625, 6789375, 20368125]

約数ペア:

[(1, 20368125), (3, 6789375), (5, 4073625), (9, 2263125), (15, 1357875), (17, 1198125), (25, 814725), (27, 754375), (45, 452625), (51, 399375), (71, 286875), (75, 271575), (85, 239625), (125, 162945), (135, 150875), (153, 133125), (213, 95625), (225, 90525), (255, 79875), (355, 57375), (375, 54315), (425, 47925), (459, 44375), (625, 32589), (639, 31875), (675, 30175), (765, 26625), (1065, 19125), (1125, 18105), (1207, 16875), (1275, 15975), (1775, 11475), (1875, 10863), (1917, 10625), (2125, 9585), (2295, 8875), (3195, 6375), (3375, 6035), (3621, 5625), (3825, 5325)]