21676960

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2221}}^1$

素因数の和:2297

約数の個数: 48

約数和(自身を含む): 52074792

約数和(自身を除く): 30397832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 2221, 2440, 4442, 4880, 8884, 9760, 11105, 17768, 22210, 35536, 44420, 71072, 88840, 135481, 177680, 270962, 355360, 541924, 677405, 1083848, 1354810, 2167696, 2709620, 4335392, 5419240, 10838480, 21676960]

約数ペア:

[(1, 21676960), (2, 10838480), (4, 5419240), (5, 4335392), (8, 2709620), (10, 2167696), (16, 1354810), (20, 1083848), (32, 677405), (40, 541924), (61, 355360), (80, 270962), (122, 177680), (160, 135481), (244, 88840), (305, 71072), (488, 44420), (610, 35536), (976, 22210), (1220, 17768), (1952, 11105), (2221, 9760), (2440, 8884), (4442, 4880)]