21475395

素因数分解:

$3^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{587}}^1$

素因数の和:872

約数の個数: 32

約数和(自身を含む): 38384640

約数和(自身を除く): 16909245

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 271, 587, 813, 1355, 1761, 2439, 2935, 4065, 5283, 7317, 8805, 12195, 15849, 26415, 36585, 79245, 159077, 477231, 795385, 1431693, 2386155, 4295079, 7158465, 21475395]

約数ペア:

[(1, 21475395), (3, 7158465), (5, 4295079), (9, 2386155), (15, 1431693), (27, 795385), (45, 477231), (135, 159077), (271, 79245), (587, 36585), (813, 26415), (1355, 15849), (1761, 12195), (2439, 8805), (2935, 7317), (4065, 5283)]