21739249

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1097}}^1$

素因数の和:1272

約数の個数: 16

約数和(自身を含む): 26352000

約数和(自身を除く): 4612751

約数列:

[1, 7, 19, 133, 149, 1043, 1097, 2831, 7679, 19817, 20843, 145901, 163453, 1144171, 3105607, 21739249]

約数ペア:

[(1, 21739249), (7, 3105607), (19, 1144171), (133, 163453), (149, 145901), (1043, 20843), (1097, 19817), (2831, 7679)]