258837215

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{2551}}^1$

素因数の和:2799

約数の個数: 32

約数和(自身を含む): 384147456

約数和(自身を除く): 125310241

約数列:

[1, 5, 7, 13, 35, 65, 91, 223, 455, 1115, 1561, 2551, 2899, 7805, 12755, 14495, 17857, 20293, 33163, 89285, 101465, 165815, 232141, 568873, 1160705, 2844365, 3982111, 7395349, 19910555, 36976745, 51767443, 258837215]

約数ペア:

[(1, 258837215), (5, 51767443), (7, 36976745), (13, 19910555), (35, 7395349), (65, 3982111), (91, 2844365), (223, 1160705), (455, 568873), (1115, 232141), (1561, 165815), (2551, 101465), (2899, 89285), (7805, 33163), (12755, 20293), (14495, 17857)]