21992475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{367}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 39426048

約数和(自身を除く): 17433573

約数列:

[1, 3, 5, 15, 17, 25, 47, 51, 75, 85, 141, 235, 255, 367, 425, 705, 799, 1101, 1175, 1275, 1835, 2397, 3525, 3995, 5505, 6239, 9175, 11985, 17249, 18717, 19975, 27525, 31195, 51747, 59925, 86245, 93585, 155975, 258735, 293233, 431225, 467925, 879699, 1293675, 1466165, 4398495, 7330825, 21992475]

約数ペア:

[(1, 21992475), (3, 7330825), (5, 4398495), (15, 1466165), (17, 1293675), (25, 879699), (47, 467925), (51, 431225), (75, 293233), (85, 258735), (141, 155975), (235, 93585), (255, 86245), (367, 59925), (425, 51747), (705, 31195), (799, 27525), (1101, 19975), (1175, 18717), (1275, 17249), (1835, 11985), (2397, 9175), (3525, 6239), (3995, 5505)]