21865808

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4231}}^1$

素因数の和:4275

約数の個数: 40

約数和(自身を含む): 47229120

約数和(自身を除く): 25363312

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 4231, 5168, 8462, 16924, 33848, 67696, 71927, 80389, 143854, 160778, 287708, 321556, 575416, 643112, 1150832, 1286224, 1366613, 2733226, 5466452, 10932904, 21865808]

約数ペア:

[(1, 21865808), (2, 10932904), (4, 5466452), (8, 2733226), (16, 1366613), (17, 1286224), (19, 1150832), (34, 643112), (38, 575416), (68, 321556), (76, 287708), (136, 160778), (152, 143854), (272, 80389), (304, 71927), (323, 67696), (646, 33848), (1292, 16924), (2584, 8462), (4231, 5168)]