21017738

素因数分解:

$2^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{11821}}^1$

素因数の和:11957

約数の個数: 16

約数和(自身を含む): 36317184

約数和(自身を除く): 15299446

約数列:

[1, 2, 7, 14, 127, 254, 889, 1778, 11821, 23642, 82747, 165494, 1501267, 3002534, 10508869, 21017738]

約数ペア:

[(1, 21017738), (2, 10508869), (7, 3002534), (14, 1501267), (127, 165494), (254, 82747), (889, 23642), (1778, 11821)]