19937412

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:254

約数の個数: 108

約数和(自身を含む): 58094400

約数和(自身を除く): 38156988

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 23, 33, 36, 44, 46, 66, 69, 92, 99, 121, 132, 138, 198, 199, 207, 242, 253, 276, 363, 396, 398, 414, 484, 506, 597, 726, 759, 796, 828, 1012, 1089, 1194, 1452, 1518, 1791, 2178, 2189, 2277, 2388, 2783, 3036, 3582, 4356, 4378, 4554, 4577, 5566, 6567, 7164, 8349, 8756, 9108, 9154, 11132, 13134, 13731, 16698, 18308, 19701, 24079, 25047, 26268, 27462, 33396, 39402, 41193, 48158, 50094, 50347, 54924, 72237, 78804, 82386, 96316, 100188, 100694, 144474, 151041, 164772, 201388, 216711, 288948, 302082, 433422, 453123, 553817, 604164, 866844, 906246, 1107634, 1661451, 1812492, 2215268, 3322902, 4984353, 6645804, 9968706, 19937412]

約数ペア:

[(1, 19937412), (2, 9968706), (3, 6645804), (4, 4984353), (6, 3322902), (9, 2215268), (11, 1812492), (12, 1661451), (18, 1107634), (22, 906246), (23, 866844), (33, 604164), (36, 553817), (44, 453123), (46, 433422), (66, 302082), (69, 288948), (92, 216711), (99, 201388), (121, 164772), (132, 151041), (138, 144474), (198, 100694), (199, 100188), (207, 96316), (242, 82386), (253, 78804), (276, 72237), (363, 54924), (396, 50347), (398, 50094), (414, 48158), (484, 41193), (506, 39402), (597, 33396), (726, 27462), (759, 26268), (796, 25047), (828, 24079), (1012, 19701), (1089, 18308), (1194, 16698), (1452, 13731), (1518, 13134), (1791, 11132), (2178, 9154), (2189, 9108), (2277, 8756), (2388, 8349), (2783, 7164), (3036, 6567), (3582, 5566), (4356, 4577), (4378, 4554)]