21126375

素因数分解:

$3^2\times 5^3\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:321

約数の個数: 48

約数和(自身を含む): 38694240

約数和(自身を除く): 17567865

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 89, 125, 211, 225, 267, 375, 445, 633, 801, 1055, 1125, 1335, 1899, 2225, 3165, 4005, 5275, 6675, 9495, 11125, 15825, 18779, 20025, 26375, 33375, 47475, 56337, 79125, 93895, 100125, 169011, 237375, 281685, 469475, 845055, 1408425, 2347375, 4225275, 7042125, 21126375]

約数ペア:

[(1, 21126375), (3, 7042125), (5, 4225275), (9, 2347375), (15, 1408425), (25, 845055), (45, 469475), (75, 281685), (89, 237375), (125, 169011), (211, 100125), (225, 93895), (267, 79125), (375, 56337), (445, 47475), (633, 33375), (801, 26375), (1055, 20025), (1125, 18779), (1335, 15825), (1899, 11125), (2225, 9495), (3165, 6675), (4005, 5275)]