18879080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{401}}^1$

素因数の和:530

約数の個数: 64

約数和(自身を含む): 46889280

約数和(自身を除く): 28010200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 107, 110, 214, 220, 401, 428, 440, 535, 802, 856, 1070, 1177, 1604, 2005, 2140, 2354, 3208, 4010, 4280, 4411, 4708, 5885, 8020, 8822, 9416, 11770, 16040, 17644, 22055, 23540, 35288, 42907, 44110, 47080, 85814, 88220, 171628, 176440, 214535, 343256, 429070, 471977, 858140, 943954, 1716280, 1887908, 2359885, 3775816, 4719770, 9439540, 18879080]

約数ペア:

[(1, 18879080), (2, 9439540), (4, 4719770), (5, 3775816), (8, 2359885), (10, 1887908), (11, 1716280), (20, 943954), (22, 858140), (40, 471977), (44, 429070), (55, 343256), (88, 214535), (107, 176440), (110, 171628), (214, 88220), (220, 85814), (401, 47080), (428, 44110), (440, 42907), (535, 35288), (802, 23540), (856, 22055), (1070, 17644), (1177, 16040), (1604, 11770), (2005, 9416), (2140, 8822), (2354, 8020), (3208, 5885), (4010, 4708), (4280, 4411)]