21752560

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{2141}}^1$

素因数の和:2281

約数の個数: 40

約数和(自身を含む): 50996736

約数和(自身を除く): 29244176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 2032, 2141, 2540, 4282, 5080, 8564, 10160, 10705, 17128, 21410, 34256, 42820, 85640, 171280, 271907, 543814, 1087628, 1359535, 2175256, 2719070, 4350512, 5438140, 10876280, 21752560]

約数ペア:

[(1, 21752560), (2, 10876280), (4, 5438140), (5, 4350512), (8, 2719070), (10, 2175256), (16, 1359535), (20, 1087628), (40, 543814), (80, 271907), (127, 171280), (254, 85640), (508, 42820), (635, 34256), (1016, 21410), (1270, 17128), (2032, 10705), (2141, 10160), (2540, 8564), (4282, 5080)]