221637878

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{18691}}^1$

素因数の和:18729

約数の個数: 36

約数和(自身を含む): 425112156

約数和(自身を除く): 203474278

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 121, 154, 242, 539, 847, 1078, 1694, 5929, 11858, 18691, 37382, 130837, 205601, 261674, 411202, 915859, 1439207, 1831718, 2261611, 2878414, 4523222, 10074449, 15831277, 20148898, 31662554, 110818939, 221637878]

約数ペア:

[(1, 221637878), (2, 110818939), (7, 31662554), (11, 20148898), (14, 15831277), (22, 10074449), (49, 4523222), (77, 2878414), (98, 2261611), (121, 1831718), (154, 1439207), (242, 915859), (539, 411202), (847, 261674), (1078, 205601), (1694, 130837), (5929, 37382), (11858, 18691)]