18897875

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:216

約数の個数: 32

約数和(自身を含む): 25396800

約数和(自身を除く): 6498925

約数列:

[1, 5, 19, 25, 73, 95, 109, 125, 365, 475, 545, 1387, 1825, 2071, 2375, 2725, 6935, 7957, 9125, 10355, 13625, 34675, 39785, 51775, 151183, 173375, 198925, 258875, 755915, 994625, 3779575, 18897875]

約数ペア:

[(1, 18897875), (5, 3779575), (19, 994625), (25, 755915), (73, 258875), (95, 198925), (109, 173375), (125, 151183), (365, 51775), (475, 39785), (545, 34675), (1387, 13625), (1825, 10355), (2071, 9125), (2375, 7957), (2725, 6935)]