18742425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{409}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 34164480

約数和(自身を除く): 15422055

約数列:

[1, 3, 5, 13, 15, 25, 39, 47, 65, 75, 141, 195, 235, 325, 409, 611, 705, 975, 1175, 1227, 1833, 2045, 3055, 3525, 5317, 6135, 9165, 10225, 15275, 15951, 19223, 26585, 30675, 45825, 57669, 79755, 96115, 132925, 249899, 288345, 398775, 480575, 749697, 1249495, 1441725, 3748485, 6247475, 18742425]

約数ペア:

[(1, 18742425), (3, 6247475), (5, 3748485), (13, 1441725), (15, 1249495), (25, 749697), (39, 480575), (47, 398775), (65, 288345), (75, 249899), (141, 132925), (195, 96115), (235, 79755), (325, 57669), (409, 45825), (611, 30675), (705, 26585), (975, 19223), (1175, 15951), (1227, 15275), (1833, 10225), (2045, 9165), (3055, 6135), (3525, 5317)]