7920405

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 14511744

約数和(自身を除く): 6591339

約数列:

[1, 3, 5, 9, 15, 37, 45, 67, 71, 111, 185, 201, 213, 333, 335, 355, 555, 603, 639, 1005, 1065, 1665, 2479, 2627, 3015, 3195, 4757, 7437, 7881, 12395, 13135, 14271, 22311, 23643, 23785, 37185, 39405, 42813, 71355, 111555, 118215, 176009, 214065, 528027, 880045, 1584081, 2640135, 7920405]

約数ペア:

[(1, 7920405), (3, 2640135), (5, 1584081), (9, 880045), (15, 528027), (37, 214065), (45, 176009), (67, 118215), (71, 111555), (111, 71355), (185, 42813), (201, 39405), (213, 37185), (333, 23785), (335, 23643), (355, 22311), (555, 14271), (603, 13135), (639, 12395), (1005, 7881), (1065, 7437), (1665, 4757), (2479, 3195), (2627, 3015)]