21616371

素因数分解:

$3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1367}}^1$

素因数の和:1631

約数の個数: 24

約数和(自身を含む): 35852544

約数和(自身を除く): 14236173

約数列:

[1, 3, 7, 9, 21, 63, 251, 753, 1367, 1757, 2259, 4101, 5271, 9569, 12303, 15813, 28707, 86121, 343117, 1029351, 2401819, 3088053, 7205457, 21616371]

約数ペア:

[(1, 21616371), (3, 7205457), (7, 3088053), (9, 2401819), (21, 1029351), (63, 343117), (251, 86121), (753, 28707), (1367, 15813), (1757, 12303), (2259, 9569), (4101, 5271)]