21857172

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{349}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 54331200

約数和(自身を除く): 32474028

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 307, 349, 614, 698, 921, 1047, 1228, 1396, 1842, 2094, 3684, 4188, 5219, 5933, 10438, 11866, 15657, 17799, 20876, 23732, 31314, 35598, 62628, 71196, 107143, 214286, 321429, 428572, 642858, 1285716, 1821431, 3642862, 5464293, 7285724, 10928586, 21857172]

約数ペア:

[(1, 21857172), (2, 10928586), (3, 7285724), (4, 5464293), (6, 3642862), (12, 1821431), (17, 1285716), (34, 642858), (51, 428572), (68, 321429), (102, 214286), (204, 107143), (307, 71196), (349, 62628), (614, 35598), (698, 31314), (921, 23732), (1047, 20876), (1228, 17799), (1396, 15657), (1842, 11866), (2094, 10438), (3684, 5933), (4188, 5219)]