18750039

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 32277504

約数和(自身を除く): 13527465

約数列:

[1, 3, 7, 11, 21, 33, 47, 77, 121, 141, 157, 231, 329, 363, 471, 517, 847, 987, 1099, 1551, 1727, 2541, 3297, 3619, 5181, 5687, 7379, 10857, 12089, 17061, 18997, 22137, 36267, 39809, 51653, 56991, 81169, 119427, 132979, 154959, 243507, 398937, 568183, 892859, 1704549, 2678577, 6250013, 18750039]

約数ペア:

[(1, 18750039), (3, 6250013), (7, 2678577), (11, 1704549), (21, 892859), (33, 568183), (47, 398937), (77, 243507), (121, 154959), (141, 132979), (157, 119427), (231, 81169), (329, 56991), (363, 51653), (471, 39809), (517, 36267), (847, 22137), (987, 18997), (1099, 17061), (1551, 12089), (1727, 10857), (2541, 7379), (3297, 5687), (3619, 5181)]