21378809

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{359}}^1$

素因数の和:520

約数の個数: 16

約数和(自身を含む): 23639040

約数和(自身を除く): 2260231

約数列:

[1, 17, 31, 113, 359, 527, 1921, 3503, 6103, 11129, 40567, 59551, 189193, 689639, 1257577, 21378809]

約数ペア:

[(1, 21378809), (17, 1257577), (31, 689639), (113, 189193), (359, 59551), (527, 40567), (1921, 11129), (3503, 6103)]