19261360

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3947}}^1$

素因数の和:4021

約数の個数: 40

約数和(自身を含む): 45528336

約数和(自身を除く): 26266976

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 3947, 4880, 7894, 15788, 19735, 31576, 39470, 63152, 78940, 157880, 240767, 315760, 481534, 963068, 1203835, 1926136, 2407670, 3852272, 4815340, 9630680, 19261360]

約数ペア:

[(1, 19261360), (2, 9630680), (4, 4815340), (5, 3852272), (8, 2407670), (10, 1926136), (16, 1203835), (20, 963068), (40, 481534), (61, 315760), (80, 240767), (122, 157880), (244, 78940), (305, 63152), (488, 39470), (610, 31576), (976, 19735), (1220, 15788), (2440, 7894), (3947, 4880)]