20178906069

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{907}}^1\times {\mathrm{22541}}^1$

素因数の和:23505

約数の個数: 32

約数和(自身を含む): 31439056896

約数和(自身を除く): 11260150827

約数列:

[1, 3, 7, 21, 47, 141, 329, 907, 987, 2721, 6349, 19047, 22541, 42629, 67623, 127887, 157787, 298403, 473361, 895209, 1059427, 3178281, 7415989, 20444687, 22247967, 61334061, 143112809, 429338427, 960900289, 2882700867, 6726302023, 20178906069]

約数ペア:

[(1, 20178906069), (3, 6726302023), (7, 2882700867), (21, 960900289), (47, 429338427), (141, 143112809), (329, 61334061), (907, 22247967), (987, 20444687), (2721, 7415989), (6349, 3178281), (19047, 1059427), (22541, 895209), (42629, 473361), (67623, 298403), (127887, 157787)]