12881890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1129}}^1$

素因数の和:1306

約数の個数: 32

約数和(自身を含む): 26686080

約数和(自身を除く): 13804190

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 163, 326, 815, 1129, 1141, 1630, 2258, 2282, 5645, 5705, 7903, 11290, 11410, 15806, 39515, 79030, 184027, 368054, 920135, 1288189, 1840270, 2576378, 6440945, 12881890]

約数ペア:

[(1, 12881890), (2, 6440945), (5, 2576378), (7, 1840270), (10, 1288189), (14, 920135), (35, 368054), (70, 184027), (163, 79030), (326, 39515), (815, 15806), (1129, 11410), (1141, 11290), (1630, 7903), (2258, 5705), (2282, 5645)]