21649253

素因数分解:

${\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:332

約数の個数: 16

約数和(自身を含む): 23232000

約数和(自身を除く): 1582747

約数列:

[1, 31, 43, 109, 149, 1333, 3379, 4619, 4687, 6407, 16241, 145297, 198617, 503471, 698363, 21649253]

約数ペア:

[(1, 21649253), (31, 698363), (43, 503471), (109, 198617), (149, 145297), (1333, 16241), (3379, 6407), (4619, 4687)]