221405919

素因数分解:

$3^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{60943}}^1$

素因数の和:61126

約数の個数: 16

約数和(自身を含む): 339336192

約数和(自身を除く): 117930273

約数列:

[1, 3, 7, 21, 173, 519, 1211, 3633, 60943, 182829, 426601, 1279803, 10543139, 31629417, 73801973, 221405919]

約数ペア:

[(1, 221405919), (3, 73801973), (7, 31629417), (21, 10543139), (173, 1279803), (519, 426601), (1211, 182829), (3633, 60943)]