21633880

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{971}}^1$

素因数の和:1539

約数の個数: 32

約数和(自身を含む): 48813840

約数和(自身を除く): 27179960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 971, 1114, 1942, 2228, 2785, 3884, 4456, 4855, 5570, 7768, 9710, 11140, 19420, 22280, 38840, 540847, 1081694, 2163388, 2704235, 4326776, 5408470, 10816940, 21633880]

約数ペア:

[(1, 21633880), (2, 10816940), (4, 5408470), (5, 4326776), (8, 2704235), (10, 2163388), (20, 1081694), (40, 540847), (557, 38840), (971, 22280), (1114, 19420), (1942, 11140), (2228, 9710), (2785, 7768), (3884, 5570), (4456, 4855)]