21820249

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1049}}^1$

素因数の和:1152

約数の個数: 16

約数和(自身を含む): 24998400

約数和(自身を除く): 3178151

約数列:

[1, 11, 31, 61, 341, 671, 1049, 1891, 11539, 20801, 32519, 63989, 357709, 703879, 1983659, 21820249]

約数ペア:

[(1, 21820249), (11, 1983659), (31, 703879), (61, 357709), (341, 63989), (671, 32519), (1049, 20801), (1891, 11539)]