18187180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{229}}^1$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 44165520

約数和(自身を除く): 25978340

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 229, 361, 380, 418, 458, 722, 836, 916, 1045, 1145, 1444, 1805, 2090, 2290, 2519, 3610, 3971, 4180, 4351, 4580, 5038, 7220, 7942, 8702, 10076, 12595, 15884, 17404, 19855, 21755, 25190, 39710, 43510, 47861, 50380, 79420, 82669, 87020, 95722, 165338, 191444, 239305, 330676, 413345, 478610, 826690, 909359, 957220, 1653380, 1818718, 3637436, 4546795, 9093590, 18187180]

約数ペア:

[(1, 18187180), (2, 9093590), (4, 4546795), (5, 3637436), (10, 1818718), (11, 1653380), (19, 957220), (20, 909359), (22, 826690), (38, 478610), (44, 413345), (55, 330676), (76, 239305), (95, 191444), (110, 165338), (190, 95722), (209, 87020), (220, 82669), (229, 79420), (361, 50380), (380, 47861), (418, 43510), (458, 39710), (722, 25190), (836, 21755), (916, 19855), (1045, 17404), (1145, 15884), (1444, 12595), (1805, 10076), (2090, 8702), (2290, 7942), (2519, 7220), (3610, 5038), (3971, 4580), (4180, 4351)]