128578625

素因数分解:

$5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6389}}^1$

素因数の和:6434

約数の個数: 32

約数和(自身を含む): 191393280

約数和(自身を除く): 62814655

約数列:

[1, 5, 7, 23, 25, 35, 115, 125, 161, 175, 575, 805, 875, 2875, 4025, 6389, 20125, 31945, 44723, 146947, 159725, 223615, 734735, 798625, 1028629, 1118075, 3673675, 5143145, 5590375, 18368375, 25715725, 128578625]

約数ペア:

[(1, 128578625), (5, 25715725), (7, 18368375), (23, 5590375), (25, 5143145), (35, 3673675), (115, 1118075), (125, 1028629), (161, 798625), (175, 734735), (575, 223615), (805, 159725), (875, 146947), (2875, 44723), (4025, 31945), (6389, 20125)]