68405375

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:312

約数の個数: 32

約数和(自身を含む): 89456640

約数和(自身を除く): 21051265

約数列:

[1, 5, 25, 31, 125, 127, 139, 155, 635, 695, 775, 3175, 3475, 3875, 3937, 4309, 15875, 17375, 17653, 19685, 21545, 88265, 98425, 107725, 441325, 492125, 538625, 547243, 2206625, 2736215, 13681075, 68405375]

約数ペア:

[(1, 68405375), (5, 13681075), (25, 2736215), (31, 2206625), (125, 547243), (127, 538625), (139, 492125), (155, 441325), (635, 107725), (695, 98425), (775, 88265), (3175, 21545), (3475, 19685), (3875, 17653), (3937, 17375), (4309, 15875)]