15681978

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:364

約数の個数: 64

約数和(自身を含む): 38102400

約数和(自身を除く): 22420422

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 89, 117, 178, 234, 251, 267, 351, 502, 534, 702, 753, 801, 1157, 1506, 1602, 2259, 2314, 2403, 3263, 3471, 4518, 4806, 6526, 6777, 6942, 9789, 10413, 13554, 19578, 20826, 22339, 29367, 31239, 44678, 58734, 62478, 67017, 88101, 134034, 176202, 201051, 290407, 402102, 580814, 603153, 871221, 1206306, 1742442, 2613663, 5227326, 7840989, 15681978]

約数ペア:

[(1, 15681978), (2, 7840989), (3, 5227326), (6, 2613663), (9, 1742442), (13, 1206306), (18, 871221), (26, 603153), (27, 580814), (39, 402102), (54, 290407), (78, 201051), (89, 176202), (117, 134034), (178, 88101), (234, 67017), (251, 62478), (267, 58734), (351, 44678), (502, 31239), (534, 29367), (702, 22339), (753, 20826), (801, 19578), (1157, 13554), (1506, 10413), (1602, 9789), (2259, 6942), (2314, 6777), (2403, 6526), (3263, 4806), (3471, 4518)]