21325018

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{431}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 37884672

約数和(自身を除く): 16559654

約数列:

[1, 2, 11, 13, 22, 26, 143, 173, 286, 346, 431, 862, 1903, 2249, 3806, 4498, 4741, 5603, 9482, 11206, 24739, 49478, 61633, 74563, 123266, 149126, 820193, 969319, 1640386, 1938638, 10662509, 21325018]

約数ペア:

[(1, 21325018), (2, 10662509), (11, 1938638), (13, 1640386), (22, 969319), (26, 820193), (143, 149126), (173, 123266), (286, 74563), (346, 61633), (431, 49478), (862, 24739), (1903, 11206), (2249, 9482), (3806, 5603), (4498, 4741)]