20914820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2393}}^1$

素因数の和:2444

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 27348220

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 380, 437, 460, 874, 1748, 2185, 2393, 4370, 4786, 8740, 9572, 11965, 23930, 45467, 47860, 55039, 90934, 110078, 181868, 220156, 227335, 275195, 454670, 550390, 909340, 1045741, 1100780, 2091482, 4182964, 5228705, 10457410, 20914820]

約数ペア:

[(1, 20914820), (2, 10457410), (4, 5228705), (5, 4182964), (10, 2091482), (19, 1100780), (20, 1045741), (23, 909340), (38, 550390), (46, 454670), (76, 275195), (92, 227335), (95, 220156), (115, 181868), (190, 110078), (230, 90934), (380, 55039), (437, 47860), (460, 45467), (874, 23930), (1748, 11965), (2185, 9572), (2393, 8740), (4370, 4786)]