12491875

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:133

約数の個数: 40

約数和(自身を含む): 17994240

約数和(自身を除く): 5502365

約数列:

[1, 5, 11, 23, 25, 55, 79, 115, 125, 253, 275, 395, 575, 625, 869, 1265, 1375, 1817, 1975, 2875, 4345, 6325, 6875, 9085, 9875, 14375, 19987, 21725, 31625, 45425, 49375, 99935, 108625, 158125, 227125, 499675, 543125, 1135625, 2498375, 12491875]

約数ペア:

[(1, 12491875), (5, 2498375), (11, 1135625), (23, 543125), (25, 499675), (55, 227125), (79, 158125), (115, 108625), (125, 99935), (253, 49375), (275, 45425), (395, 31625), (575, 21725), (625, 19987), (869, 14375), (1265, 9875), (1375, 9085), (1817, 6875), (1975, 6325), (2875, 4345)]