18904998

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 45139968

約数和(自身を除く): 26234970

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 47, 61, 94, 122, 141, 157, 183, 282, 314, 329, 366, 427, 471, 658, 854, 942, 987, 1099, 1281, 1974, 2198, 2562, 2867, 3297, 5734, 6594, 7379, 8601, 9577, 14758, 17202, 19154, 20069, 22137, 28731, 40138, 44274, 51653, 57462, 60207, 67039, 103306, 120414, 134078, 154959, 201117, 309918, 402234, 450119, 900238, 1350357, 2700714, 3150833, 6301666, 9452499, 18904998]

約数ペア:

[(1, 18904998), (2, 9452499), (3, 6301666), (6, 3150833), (7, 2700714), (14, 1350357), (21, 900238), (42, 450119), (47, 402234), (61, 309918), (94, 201117), (122, 154959), (141, 134078), (157, 120414), (183, 103306), (282, 67039), (314, 60207), (329, 57462), (366, 51653), (427, 44274), (471, 40138), (658, 28731), (854, 22137), (942, 20069), (987, 19154), (1099, 17202), (1281, 14758), (1974, 9577), (2198, 8601), (2562, 7379), (2867, 6594), (3297, 5734)]