20117680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22861}}^1$

素因数の和:22885

約数の個数: 40

約数和(自身を含む): 51027984

約数和(自身を除く): 30910304

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22861, 45722, 91444, 114305, 182888, 228610, 251471, 365776, 457220, 502942, 914440, 1005884, 1257355, 1828880, 2011768, 2514710, 4023536, 5029420, 10058840, 20117680]

約数ペア:

[(1, 20117680), (2, 10058840), (4, 5029420), (5, 4023536), (8, 2514710), (10, 2011768), (11, 1828880), (16, 1257355), (20, 1005884), (22, 914440), (40, 502942), (44, 457220), (55, 365776), (80, 251471), (88, 228610), (110, 182888), (176, 114305), (220, 91444), (440, 45722), (880, 22861)]