81441976

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:197

約数の個数: 128

約数和(自身を含む): 203212800

約数和(自身を除く): 121770824

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 29, 44, 47, 56, 58, 77, 88, 94, 97, 116, 154, 188, 194, 203, 232, 308, 319, 329, 376, 388, 406, 517, 616, 638, 658, 679, 776, 812, 1034, 1067, 1276, 1316, 1358, 1363, 1624, 2068, 2134, 2233, 2552, 2632, 2716, 2726, 2813, 3619, 4136, 4268, 4466, 4559, 5432, 5452, 5626, 7238, 7469, 8536, 8932, 9118, 9541, 10904, 11252, 14476, 14938, 14993, 17864, 18236, 19082, 19691, 22504, 28952, 29876, 29986, 30943, 31913, 36472, 38164, 39382, 50149, 59752, 59972, 61886, 63826, 76328, 78764, 100298, 104951, 119944, 123772, 127652, 132211, 157528, 200596, 209902, 216601, 247544, 255304, 264422, 351043, 401192, 419804, 433202, 528844, 702086, 839608, 866404, 925477, 1057688, 1404172, 1454321, 1732808, 1850954, 2808344, 2908642, 3701908, 5817284, 7403816, 10180247, 11634568, 20360494, 40720988, 81441976]

約数ペア:

[(1, 81441976), (2, 40720988), (4, 20360494), (7, 11634568), (8, 10180247), (11, 7403816), (14, 5817284), (22, 3701908), (28, 2908642), (29, 2808344), (44, 1850954), (47, 1732808), (56, 1454321), (58, 1404172), (77, 1057688), (88, 925477), (94, 866404), (97, 839608), (116, 702086), (154, 528844), (188, 433202), (194, 419804), (203, 401192), (232, 351043), (308, 264422), (319, 255304), (329, 247544), (376, 216601), (388, 209902), (406, 200596), (517, 157528), (616, 132211), (638, 127652), (658, 123772), (679, 119944), (776, 104951), (812, 100298), (1034, 78764), (1067, 76328), (1276, 63826), (1316, 61886), (1358, 59972), (1363, 59752), (1624, 50149), (2068, 39382), (2134, 38164), (2233, 36472), (2552, 31913), (2632, 30943), (2716, 29986), (2726, 29876), (2813, 28952), (3619, 22504), (4136, 19691), (4268, 19082), (4466, 18236), (4559, 17864), (5432, 14993), (5452, 14938), (5626, 14476), (7238, 11252), (7469, 10904), (8536, 9541), (8932, 9118)]