15661520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{27967}}^1$

素因数の和:27987

約数の個数: 40

約数和(自身を含む): 41616384

約数和(自身を除く): 25954864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 27967, 55934, 111868, 139835, 195769, 223736, 279670, 391538, 447472, 559340, 783076, 978845, 1118680, 1566152, 1957690, 2237360, 3132304, 3915380, 7830760, 15661520]

約数ペア:

[(1, 15661520), (2, 7830760), (4, 3915380), (5, 3132304), (7, 2237360), (8, 1957690), (10, 1566152), (14, 1118680), (16, 978845), (20, 783076), (28, 559340), (35, 447472), (40, 391538), (56, 279670), (70, 223736), (80, 195769), (112, 139835), (140, 111868), (280, 55934), (560, 27967)]