611915050

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{199}}^1\times {\mathrm{691}}^1$

素因数の和:991

約数の個数: 48

約数和(自身を含む): 1158408000

約数和(自身を除く): 546492950

約数列:

[1, 2, 5, 10, 25, 50, 89, 178, 199, 398, 445, 691, 890, 995, 1382, 1990, 2225, 3455, 4450, 4975, 6910, 9950, 17275, 17711, 34550, 35422, 61499, 88555, 122998, 137509, 177110, 275018, 307495, 442775, 614990, 687545, 885550, 1375090, 1537475, 3074950, 3437725, 6875450, 12238301, 24476602, 61191505, 122383010, 305957525, 611915050]

約数ペア:

[(1, 611915050), (2, 305957525), (5, 122383010), (10, 61191505), (25, 24476602), (50, 12238301), (89, 6875450), (178, 3437725), (199, 3074950), (398, 1537475), (445, 1375090), (691, 885550), (890, 687545), (995, 614990), (1382, 442775), (1990, 307495), (2225, 275018), (3455, 177110), (4450, 137509), (4975, 122998), (6910, 88555), (9950, 61499), (17275, 35422), (17711, 34550)]