21000391748

素因数分解:

$2^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{7732103}}^1$

素因数の和:7732211

約数の個数: 24

約数和(自身を含む): 42433786752

約数和(自身を除く): 21433395004

約数列:

[1, 2, 4, 7, 14, 28, 97, 194, 388, 679, 1358, 2716, 7732103, 15464206, 30928412, 54124721, 108249442, 216498884, 750013991, 1500027982, 3000055964, 5250097937, 10500195874, 21000391748]

約数ペア:

[(1, 21000391748), (2, 10500195874), (4, 5250097937), (7, 3000055964), (14, 1500027982), (28, 750013991), (97, 216498884), (194, 108249442), (388, 54124721), (679, 30928412), (1358, 15464206), (2716, 7732103)]