13207720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5413}}^1$

素因数の和:5485

約数の個数: 32

約数和(自身を含む): 30210120

約数和(自身を除く): 17002400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 5413, 10826, 21652, 27065, 43304, 54130, 108260, 216520, 330193, 660386, 1320772, 1650965, 2641544, 3301930, 6603860, 13207720]

約数ペア:

[(1, 13207720), (2, 6603860), (4, 3301930), (5, 2641544), (8, 1650965), (10, 1320772), (20, 660386), (40, 330193), (61, 216520), (122, 108260), (244, 54130), (305, 43304), (488, 27065), (610, 21652), (1220, 10826), (2440, 5413)]