21509409

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{1931}}^1$

素因数の和:2060

約数の個数: 16

約数和(自身を含む): 29675520

約数和(自身を除く): 8166111

約数列:

[1, 3, 47, 79, 141, 237, 1931, 3713, 5793, 11139, 90757, 152549, 272271, 457647, 7169803, 21509409]

約数ペア:

[(1, 21509409), (3, 7169803), (47, 457647), (79, 272271), (141, 152549), (237, 90757), (1931, 11139), (3713, 5793)]