21898125

素因数分解:

$3^2\times 5^4\times {\mathrm{17}}^1\times {\mathrm{229}}^1$

素因数の和:272

約数の個数: 60

約数和(自身を含む): 42033420

約数和(自身を除く): 20135295

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 125, 153, 225, 229, 255, 375, 425, 625, 687, 765, 1125, 1145, 1275, 1875, 2061, 2125, 3435, 3825, 3893, 5625, 5725, 6375, 10305, 10625, 11679, 17175, 19125, 19465, 28625, 31875, 35037, 51525, 58395, 85875, 95625, 97325, 143125, 175185, 257625, 291975, 429375, 486625, 875925, 1288125, 1459875, 2433125, 4379625, 7299375, 21898125]

約数ペア:

[(1, 21898125), (3, 7299375), (5, 4379625), (9, 2433125), (15, 1459875), (17, 1288125), (25, 875925), (45, 486625), (51, 429375), (75, 291975), (85, 257625), (125, 175185), (153, 143125), (225, 97325), (229, 95625), (255, 85875), (375, 58395), (425, 51525), (625, 35037), (687, 31875), (765, 28625), (1125, 19465), (1145, 19125), (1275, 17175), (1875, 11679), (2061, 10625), (2125, 10305), (3435, 6375), (3825, 5725), (3893, 5625)]