31881318

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:321

約数の個数: 64

約数和(自身を含む): 75694080

約数和(自身を除く): 43812762

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 43, 86, 127, 129, 139, 254, 258, 278, 301, 381, 417, 602, 762, 834, 889, 903, 973, 1778, 1806, 1946, 2667, 2919, 5334, 5461, 5838, 5977, 10922, 11954, 16383, 17653, 17931, 32766, 35306, 35862, 38227, 41839, 52959, 76454, 83678, 105918, 114681, 123571, 125517, 229362, 247142, 251034, 370713, 741426, 759079, 1518158, 2277237, 4554474, 5313553, 10627106, 15940659, 31881318]

約数ペア:

[(1, 31881318), (2, 15940659), (3, 10627106), (6, 5313553), (7, 4554474), (14, 2277237), (21, 1518158), (42, 759079), (43, 741426), (86, 370713), (127, 251034), (129, 247142), (139, 229362), (254, 125517), (258, 123571), (278, 114681), (301, 105918), (381, 83678), (417, 76454), (602, 52959), (762, 41839), (834, 38227), (889, 35862), (903, 35306), (973, 32766), (1778, 17931), (1806, 17653), (1946, 16383), (2667, 11954), (2919, 10922), (5334, 5977), (5461, 5838)]