21217395

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{683}}^1$

素因数の和:819

約数の個数: 32

約数和(自身を含む): 36115200

約数和(自身を除く): 14897805

約数列:

[1, 3, 5, 15, 19, 57, 95, 109, 285, 327, 545, 683, 1635, 2049, 2071, 3415, 6213, 10245, 10355, 12977, 31065, 38931, 64885, 74447, 194655, 223341, 372235, 1116705, 1414493, 4243479, 7072465, 21217395]

約数ペア:

[(1, 21217395), (3, 7072465), (5, 4243479), (15, 1414493), (19, 1116705), (57, 372235), (95, 223341), (109, 194655), (285, 74447), (327, 64885), (545, 38931), (683, 31065), (1635, 12977), (2049, 10355), (2071, 10245), (3415, 6213)]