28150540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{643}}^1$

素因数の和:862

約数の個数: 48

約数和(自身を含む): 64915200

約数和(自身を除く): 36764660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 199, 220, 398, 643, 796, 995, 1286, 1990, 2189, 2572, 3215, 3980, 4378, 6430, 7073, 8756, 10945, 12860, 14146, 21890, 28292, 35365, 43780, 70730, 127957, 141460, 255914, 511828, 639785, 1279570, 1407527, 2559140, 2815054, 5630108, 7037635, 14075270, 28150540]

約数ペア:

[(1, 28150540), (2, 14075270), (4, 7037635), (5, 5630108), (10, 2815054), (11, 2559140), (20, 1407527), (22, 1279570), (44, 639785), (55, 511828), (110, 255914), (199, 141460), (220, 127957), (398, 70730), (643, 43780), (796, 35365), (995, 28292), (1286, 21890), (1990, 14146), (2189, 12860), (2572, 10945), (3215, 8756), (3980, 7073), (4378, 6430)]