19788975

素因数分解:

$3^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1543}}^1$

素因数の和:1581

約数の個数: 48

約数和(自身を含む): 38291200

約数和(自身を除く): 18502225

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 95, 135, 171, 225, 285, 475, 513, 675, 855, 1425, 1543, 2565, 4275, 4629, 7715, 12825, 13887, 23145, 29317, 38575, 41661, 69435, 87951, 115725, 146585, 208305, 263853, 347175, 439755, 732925, 791559, 1041525, 1319265, 2198775, 3957795, 6596325, 19788975]

約数ペア:

[(1, 19788975), (3, 6596325), (5, 3957795), (9, 2198775), (15, 1319265), (19, 1041525), (25, 791559), (27, 732925), (45, 439755), (57, 347175), (75, 263853), (95, 208305), (135, 146585), (171, 115725), (225, 87951), (285, 69435), (475, 41661), (513, 38575), (675, 29317), (855, 23145), (1425, 13887), (1543, 12825), (2565, 7715), (4275, 4629)]