16220205

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 30176640

約数和(自身を除く): 13956435

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 61, 95, 171, 183, 285, 305, 311, 549, 855, 915, 933, 1159, 1555, 2745, 2799, 3477, 4665, 5795, 5909, 10431, 13995, 17385, 17727, 18971, 29545, 52155, 53181, 56913, 88635, 94855, 170739, 265905, 284565, 360449, 853695, 1081347, 1802245, 3244041, 5406735, 16220205]

約数ペア:

[(1, 16220205), (3, 5406735), (5, 3244041), (9, 1802245), (15, 1081347), (19, 853695), (45, 360449), (57, 284565), (61, 265905), (95, 170739), (171, 94855), (183, 88635), (285, 56913), (305, 53181), (311, 52155), (549, 29545), (855, 18971), (915, 17727), (933, 17385), (1159, 13995), (1555, 10431), (2745, 5909), (2799, 5795), (3477, 4665)]