81485908

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1721}}^1$

素因数の和:1840

約数の個数: 48

約数和(自身を含む): 173577600

約数和(自身を除く): 92091692

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 89, 133, 178, 266, 356, 532, 623, 1246, 1691, 1721, 2492, 3382, 3442, 6764, 6884, 11837, 12047, 23674, 24094, 32699, 47348, 48188, 65398, 130796, 153169, 228893, 306338, 457786, 612676, 915572, 1072183, 2144366, 2910211, 4288732, 5820422, 11640844, 20371477, 40742954, 81485908]

約数ペア:

[(1, 81485908), (2, 40742954), (4, 20371477), (7, 11640844), (14, 5820422), (19, 4288732), (28, 2910211), (38, 2144366), (76, 1072183), (89, 915572), (133, 612676), (178, 457786), (266, 306338), (356, 228893), (532, 153169), (623, 130796), (1246, 65398), (1691, 48188), (1721, 47348), (2492, 32699), (3382, 24094), (3442, 23674), (6764, 12047), (6884, 11837)]