21383480

素因数分解:

$2^3\times 5^1\times {\mathrm{283}}^1\times {\mathrm{1889}}^1$

素因数の和:2183

約数の個数: 32

約数和(自身を含む): 48308400

約数和(自身を除く): 26924920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 283, 566, 1132, 1415, 1889, 2264, 2830, 3778, 5660, 7556, 9445, 11320, 15112, 18890, 37780, 75560, 534587, 1069174, 2138348, 2672935, 4276696, 5345870, 10691740, 21383480]

約数ペア:

[(1, 21383480), (2, 10691740), (4, 5345870), (5, 4276696), (8, 2672935), (10, 2138348), (20, 1069174), (40, 534587), (283, 75560), (566, 37780), (1132, 18890), (1415, 15112), (1889, 11320), (2264, 9445), (2830, 7556), (3778, 5660)]