21613260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18959}}^1$

素因数の和:18990

約数の個数: 48

約数和(自身を含む): 63705600

約数和(自身を除く): 42092340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 18959, 37918, 56877, 75836, 94795, 113754, 189590, 227508, 284385, 360221, 379180, 568770, 720442, 1080663, 1137540, 1440884, 1801105, 2161326, 3602210, 4322652, 5403315, 7204420, 10806630, 21613260]

約数ペア:

[(1, 21613260), (2, 10806630), (3, 7204420), (4, 5403315), (5, 4322652), (6, 3602210), (10, 2161326), (12, 1801105), (15, 1440884), (19, 1137540), (20, 1080663), (30, 720442), (38, 568770), (57, 379180), (60, 360221), (76, 284385), (95, 227508), (114, 189590), (190, 113754), (228, 94795), (285, 75836), (380, 56877), (570, 37918), (1140, 18959)]