20612007

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 34882848

約数和(自身を除く): 14270841

約数列:

[1, 3, 9, 13, 17, 39, 43, 51, 117, 129, 153, 221, 241, 387, 559, 663, 723, 731, 1677, 1989, 2169, 2193, 3133, 4097, 5031, 6579, 9399, 9503, 10363, 12291, 28197, 28509, 31089, 36873, 53261, 85527, 93267, 134719, 159783, 176171, 404157, 479349, 528513, 1212471, 1585539, 2290223, 6870669, 20612007]

約数ペア:

[(1, 20612007), (3, 6870669), (9, 2290223), (13, 1585539), (17, 1212471), (39, 528513), (43, 479349), (51, 404157), (117, 176171), (129, 159783), (153, 134719), (221, 93267), (241, 85527), (387, 53261), (559, 36873), (663, 31089), (723, 28509), (731, 28197), (1677, 12291), (1989, 10363), (2169, 9503), (2193, 9399), (3133, 6579), (4097, 5031)]