20159144620

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{971}}^1\times {\mathrm{3947}}^1$

素因数の和:5190

約数の個数: 48

約数和(自身を含む): 42549712128

約数和(自身を除く): 22390567508

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 971, 1052, 1315, 1942, 2630, 3884, 3947, 4855, 5260, 7894, 9710, 15788, 19420, 19735, 39470, 78940, 255373, 510746, 1021492, 1038061, 1276865, 2076122, 2553730, 3832537, 4152244, 5107460, 5190305, 7665074, 10380610, 15330148, 19162685, 20761220, 38325370, 76650740, 1007957231, 2015914462, 4031828924, 5039786155, 10079572310, 20159144620]

約数ペア:

[(1, 20159144620), (2, 10079572310), (4, 5039786155), (5, 4031828924), (10, 2015914462), (20, 1007957231), (263, 76650740), (526, 38325370), (971, 20761220), (1052, 19162685), (1315, 15330148), (1942, 10380610), (2630, 7665074), (3884, 5190305), (3947, 5107460), (4855, 4152244), (5260, 3832537), (7894, 2553730), (9710, 2076122), (15788, 1276865), (19420, 1038061), (19735, 1021492), (39470, 510746), (78940, 255373)]