21112154

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{571}}^1$

素因数の和:738

約数の個数: 32

約数和(自身を含む): 38438400

約数和(自身を除く): 17326246

約数列:

[1, 2, 7, 14, 19, 38, 133, 139, 266, 278, 571, 973, 1142, 1946, 2641, 3997, 5282, 7994, 10849, 18487, 21698, 36974, 75943, 79369, 151886, 158738, 555583, 1111166, 1508011, 3016022, 10556077, 21112154]

約数ペア:

[(1, 21112154), (2, 10556077), (7, 3016022), (14, 1508011), (19, 1111166), (38, 555583), (133, 158738), (139, 151886), (266, 79369), (278, 75943), (571, 36974), (973, 21698), (1142, 18487), (1946, 10849), (2641, 7994), (3997, 5282)]