21202155

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4027}}^1$

素因数の和:4057

約数の個数: 40

約数和(自身を含む): 40940592

約数和(自身を除く): 19738437

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 351, 405, 585, 1053, 1755, 4027, 5265, 12081, 20135, 36243, 52351, 60405, 108729, 157053, 181215, 261755, 326187, 471159, 543645, 785265, 1413477, 1630935, 2355795, 4240431, 7067385, 21202155]

約数ペア:

[(1, 21202155), (3, 7067385), (5, 4240431), (9, 2355795), (13, 1630935), (15, 1413477), (27, 785265), (39, 543645), (45, 471159), (65, 326187), (81, 261755), (117, 181215), (135, 157053), (195, 108729), (351, 60405), (405, 52351), (585, 36243), (1053, 20135), (1755, 12081), (4027, 5265)]