21079465

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^2\times {\mathrm{103}}^1$

素因数の和:241

約数の個数: 24

約数和(自身を含む): 28327104

約数和(自身を除く): 7247639

約数列:

[1, 5, 11, 55, 61, 103, 305, 515, 671, 1133, 3355, 3721, 5665, 6283, 18605, 31415, 40931, 69113, 204655, 345565, 383263, 1916315, 4215893, 21079465]

約数ペア:

[(1, 21079465), (5, 4215893), (11, 1916315), (55, 383263), (61, 345565), (103, 204655), (305, 69113), (515, 40931), (671, 31415), (1133, 18605), (3355, 6283), (3721, 5665)]