20389278

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{349}}^1$

素因数の和:481

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 30413922

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 107, 182, 214, 273, 321, 349, 546, 642, 698, 749, 1047, 1391, 1498, 2094, 2247, 2443, 2782, 4173, 4494, 4537, 4886, 7329, 8346, 9074, 9737, 13611, 14658, 19474, 27222, 29211, 31759, 37343, 58422, 63518, 74686, 95277, 112029, 190554, 224058, 261401, 485459, 522802, 784203, 970918, 1456377, 1568406, 2912754, 3398213, 6796426, 10194639, 20389278]

約数ペア:

[(1, 20389278), (2, 10194639), (3, 6796426), (6, 3398213), (7, 2912754), (13, 1568406), (14, 1456377), (21, 970918), (26, 784203), (39, 522802), (42, 485459), (78, 261401), (91, 224058), (107, 190554), (182, 112029), (214, 95277), (273, 74686), (321, 63518), (349, 58422), (546, 37343), (642, 31759), (698, 29211), (749, 27222), (1047, 19474), (1391, 14658), (1498, 13611), (2094, 9737), (2247, 9074), (2443, 8346), (2782, 7329), (4173, 4886), (4494, 4537)]