19817080

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 26631560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 83, 94, 127, 166, 188, 235, 254, 332, 376, 415, 470, 508, 635, 664, 830, 940, 1016, 1270, 1660, 1880, 2540, 3320, 3901, 5080, 5969, 7802, 10541, 11938, 15604, 19505, 21082, 23876, 29845, 31208, 39010, 42164, 47752, 52705, 59690, 78020, 84328, 105410, 119380, 156040, 210820, 238760, 421640, 495427, 990854, 1981708, 2477135, 3963416, 4954270, 9908540, 19817080]

約数ペア:

[(1, 19817080), (2, 9908540), (4, 4954270), (5, 3963416), (8, 2477135), (10, 1981708), (20, 990854), (40, 495427), (47, 421640), (83, 238760), (94, 210820), (127, 156040), (166, 119380), (188, 105410), (235, 84328), (254, 78020), (332, 59690), (376, 52705), (415, 47752), (470, 42164), (508, 39010), (635, 31208), (664, 29845), (830, 23876), (940, 21082), (1016, 19505), (1270, 15604), (1660, 11938), (1880, 10541), (2540, 7802), (3320, 5969), (3901, 5080)]