18978492

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{337}}^1$

素因数の和:395

約数の個数: 72

約数和(自身を含む): 50480976

約数和(自身を除く): 31502484

約数列:

[1, 2, 3, 4, 6, 12, 13, 19, 26, 38, 39, 52, 57, 76, 78, 114, 156, 228, 247, 337, 361, 494, 674, 722, 741, 988, 1011, 1083, 1348, 1444, 1482, 2022, 2166, 2964, 4044, 4332, 4381, 4693, 6403, 8762, 9386, 12806, 13143, 14079, 17524, 18772, 19209, 25612, 26286, 28158, 38418, 52572, 56316, 76836, 83239, 121657, 166478, 243314, 249717, 332956, 364971, 486628, 499434, 729942, 998868, 1459884, 1581541, 3163082, 4744623, 6326164, 9489246, 18978492]

約数ペア:

[(1, 18978492), (2, 9489246), (3, 6326164), (4, 4744623), (6, 3163082), (12, 1581541), (13, 1459884), (19, 998868), (26, 729942), (38, 499434), (39, 486628), (52, 364971), (57, 332956), (76, 249717), (78, 243314), (114, 166478), (156, 121657), (228, 83239), (247, 76836), (337, 56316), (361, 52572), (494, 38418), (674, 28158), (722, 26286), (741, 25612), (988, 19209), (1011, 18772), (1083, 17524), (1348, 14079), (1444, 13143), (1482, 12806), (2022, 9386), (2166, 8762), (2964, 6403), (4044, 4693), (4332, 4381)]