18991170044

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{485509}}^1$

素因数の和:485658

約数の個数: 48

約数和(自身を含む): 41761628160

約数和(自身を除く): 22770458116

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 127, 154, 254, 308, 508, 889, 1397, 1778, 2794, 3556, 5588, 9779, 19558, 39116, 485509, 971018, 1942036, 3398563, 5340599, 6797126, 10681198, 13594252, 21362396, 37384193, 61659643, 74768386, 123319286, 149536772, 246638572, 431617501, 678256073, 863235002, 1356512146, 1726470004, 2713024292, 4747792511, 9495585022, 18991170044]

約数ペア:

[(1, 18991170044), (2, 9495585022), (4, 4747792511), (7, 2713024292), (11, 1726470004), (14, 1356512146), (22, 863235002), (28, 678256073), (44, 431617501), (77, 246638572), (127, 149536772), (154, 123319286), (254, 74768386), (308, 61659643), (508, 37384193), (889, 21362396), (1397, 13594252), (1778, 10681198), (2794, 6797126), (3556, 5340599), (5588, 3398563), (9779, 1942036), (19558, 971018), (39116, 485509)]