21689120

素因数分解:

$2^5\times 5^1\times {\mathrm{283}}^1\times {\mathrm{479}}^1$

素因数の和:777

約数の個数: 48

約数和(自身を含む): 51528960

約数和(自身を除く): 29839840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 283, 479, 566, 958, 1132, 1415, 1916, 2264, 2395, 2830, 3832, 4528, 4790, 5660, 7664, 9056, 9580, 11320, 15328, 19160, 22640, 38320, 45280, 76640, 135557, 271114, 542228, 677785, 1084456, 1355570, 2168912, 2711140, 4337824, 5422280, 10844560, 21689120]

約数ペア:

[(1, 21689120), (2, 10844560), (4, 5422280), (5, 4337824), (8, 2711140), (10, 2168912), (16, 1355570), (20, 1084456), (32, 677785), (40, 542228), (80, 271114), (160, 135557), (283, 76640), (479, 45280), (566, 38320), (958, 22640), (1132, 19160), (1415, 15328), (1916, 11320), (2264, 9580), (2395, 9056), (2830, 7664), (3832, 5660), (4528, 4790)]