18159115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 24615360

約数和(自身を除く): 6456245

約数列:

[1, 5, 13, 43, 65, 73, 89, 215, 365, 445, 559, 949, 1157, 2795, 3139, 3827, 4745, 5785, 6497, 15695, 19135, 32485, 40807, 49751, 84461, 204035, 248755, 279371, 422305, 1396855, 3631823, 18159115]

約数ペア:

[(1, 18159115), (5, 3631823), (13, 1396855), (43, 422305), (65, 279371), (73, 248755), (89, 204035), (215, 84461), (365, 49751), (445, 40807), (559, 32485), (949, 19135), (1157, 15695), (2795, 6497), (3139, 5785), (3827, 4745)]