278071755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{2551}}^1$

素因数の和:2628

約数の個数: 48

約数和(自身を含む): 493168896

約数和(自身を除く): 215097141

約数列:

[1, 3, 5, 13, 15, 39, 43, 65, 129, 169, 195, 215, 507, 559, 645, 845, 1677, 2535, 2551, 2795, 7267, 7653, 8385, 12755, 21801, 33163, 36335, 38265, 99489, 109005, 109693, 165815, 329079, 431119, 497445, 548465, 1293357, 1426009, 1645395, 2155595, 4278027, 6466785, 7130045, 18538117, 21390135, 55614351, 92690585, 278071755]

約数ペア:

[(1, 278071755), (3, 92690585), (5, 55614351), (13, 21390135), (15, 18538117), (39, 7130045), (43, 6466785), (65, 4278027), (129, 2155595), (169, 1645395), (195, 1426009), (215, 1293357), (507, 548465), (559, 497445), (645, 431119), (845, 329079), (1677, 165815), (2535, 109693), (2551, 109005), (2795, 99489), (7267, 38265), (7653, 36335), (8385, 33163), (12755, 21801)]