21853979

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{911}}^1$

素因数の和:1090

約数の個数: 16

約数和(自身を含む): 26265600

約数和(自身を除く): 4411621

約数列:

[1, 7, 23, 149, 161, 911, 1043, 3427, 6377, 20953, 23989, 135739, 146671, 950173, 3121997, 21853979]

約数ペア:

[(1, 21853979), (7, 3121997), (23, 950173), (149, 146671), (161, 135739), (911, 23989), (1043, 20953), (3427, 6377)]