21319748

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{1721}}^1$

素因数の和:1907

約数の個数: 24

約数和(自身を含む): 39537120

約数和(自身を除く): 18217372

約数列:

[1, 2, 4, 19, 38, 76, 163, 326, 652, 1721, 3097, 3442, 6194, 6884, 12388, 32699, 65398, 130796, 280523, 561046, 1122092, 5329937, 10659874, 21319748]

約数ペア:

[(1, 21319748), (2, 10659874), (4, 5329937), (19, 1122092), (38, 561046), (76, 280523), (163, 130796), (326, 65398), (652, 32699), (1721, 12388), (3097, 6884), (3442, 6194)]