18718938

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{971}}^1$

素因数の和:1009

約数の個数: 80

約数和(自身を含む): 50808384

約数和(自身を除く): 32089446

約数列:

[1, 2, 3, 6, 7, 9, 14, 17, 18, 21, 27, 34, 42, 51, 54, 63, 81, 102, 119, 126, 153, 162, 189, 238, 306, 357, 378, 459, 567, 714, 918, 971, 1071, 1134, 1377, 1942, 2142, 2754, 2913, 3213, 5826, 6426, 6797, 8739, 9639, 13594, 16507, 17478, 19278, 20391, 26217, 33014, 40782, 49521, 52434, 61173, 78651, 99042, 115549, 122346, 148563, 157302, 183519, 231098, 297126, 346647, 367038, 445689, 550557, 693294, 891378, 1039941, 1101114, 1337067, 2079882, 2674134, 3119823, 6239646, 9359469, 18718938]

約数ペア:

[(1, 18718938), (2, 9359469), (3, 6239646), (6, 3119823), (7, 2674134), (9, 2079882), (14, 1337067), (17, 1101114), (18, 1039941), (21, 891378), (27, 693294), (34, 550557), (42, 445689), (51, 367038), (54, 346647), (63, 297126), (81, 231098), (102, 183519), (119, 157302), (126, 148563), (153, 122346), (162, 115549), (189, 99042), (238, 78651), (306, 61173), (357, 52434), (378, 49521), (459, 40782), (567, 33014), (714, 26217), (918, 20391), (971, 19278), (1071, 17478), (1134, 16507), (1377, 13594), (1942, 9639), (2142, 8739), (2754, 6797), (2913, 6426), (3213, 5826)]