19855990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{241}}^1$

素因数の和:373

約数の個数: 64

約数和(自身を含む): 45163008

約数和(自身を除く): 25307018

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 107, 110, 154, 214, 241, 385, 482, 535, 749, 770, 1070, 1177, 1205, 1498, 1687, 2354, 2410, 2651, 3374, 3745, 5302, 5885, 7490, 8239, 8435, 11770, 13255, 16478, 16870, 18557, 25787, 26510, 37114, 41195, 51574, 82390, 92785, 128935, 180509, 185570, 257870, 283657, 361018, 567314, 902545, 1418285, 1805090, 1985599, 2836570, 3971198, 9927995, 19855990]

約数ペア:

[(1, 19855990), (2, 9927995), (5, 3971198), (7, 2836570), (10, 1985599), (11, 1805090), (14, 1418285), (22, 902545), (35, 567314), (55, 361018), (70, 283657), (77, 257870), (107, 185570), (110, 180509), (154, 128935), (214, 92785), (241, 82390), (385, 51574), (482, 41195), (535, 37114), (749, 26510), (770, 25787), (1070, 18557), (1177, 16870), (1205, 16478), (1498, 13255), (1687, 11770), (2354, 8435), (2410, 8239), (2651, 7490), (3374, 5885), (3745, 5302)]