20288610

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{461}}^1$

素因数の和:640

約数の個数: 64

約数和(自身を含む): 54552960

約数和(自身を除く): 34264350

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 163, 270, 326, 461, 489, 815, 922, 978, 1383, 1467, 1630, 2305, 2445, 2766, 2934, 4149, 4401, 4610, 4890, 6915, 7335, 8298, 8802, 12447, 13830, 14670, 20745, 22005, 24894, 41490, 44010, 62235, 75143, 124470, 150286, 225429, 375715, 450858, 676287, 751430, 1127145, 1352574, 2028861, 2254290, 3381435, 4057722, 6762870, 10144305, 20288610]

約数ペア:

[(1, 20288610), (2, 10144305), (3, 6762870), (5, 4057722), (6, 3381435), (9, 2254290), (10, 2028861), (15, 1352574), (18, 1127145), (27, 751430), (30, 676287), (45, 450858), (54, 375715), (90, 225429), (135, 150286), (163, 124470), (270, 75143), (326, 62235), (461, 44010), (489, 41490), (815, 24894), (922, 22005), (978, 20745), (1383, 14670), (1467, 13830), (1630, 12447), (2305, 8802), (2445, 8298), (2766, 7335), (2934, 6915), (4149, 4890), (4401, 4610)]