81551680

素因数分解:

$2^6\times 5^1\times 7^3\times {\mathrm{743}}^1$

素因数の和:781

約数の個数: 112

約数和(自身を含む): 226771200

約数和(自身を除く): 145219520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 320, 343, 392, 448, 490, 560, 686, 743, 784, 980, 1120, 1372, 1486, 1568, 1715, 1960, 2240, 2744, 2972, 3136, 3430, 3715, 3920, 5201, 5488, 5944, 6860, 7430, 7840, 10402, 10976, 11888, 13720, 14860, 15680, 20804, 21952, 23776, 26005, 27440, 29720, 36407, 41608, 47552, 52010, 54880, 59440, 72814, 83216, 104020, 109760, 118880, 145628, 166432, 182035, 208040, 237760, 254849, 291256, 332864, 364070, 416080, 509698, 582512, 728140, 832160, 1019396, 1165024, 1274245, 1456280, 1664320, 2038792, 2330048, 2548490, 2912560, 4077584, 5096980, 5825120, 8155168, 10193960, 11650240, 16310336, 20387920, 40775840, 81551680]

約数ペア:

[(1, 81551680), (2, 40775840), (4, 20387920), (5, 16310336), (7, 11650240), (8, 10193960), (10, 8155168), (14, 5825120), (16, 5096980), (20, 4077584), (28, 2912560), (32, 2548490), (35, 2330048), (40, 2038792), (49, 1664320), (56, 1456280), (64, 1274245), (70, 1165024), (80, 1019396), (98, 832160), (112, 728140), (140, 582512), (160, 509698), (196, 416080), (224, 364070), (245, 332864), (280, 291256), (320, 254849), (343, 237760), (392, 208040), (448, 182035), (490, 166432), (560, 145628), (686, 118880), (743, 109760), (784, 104020), (980, 83216), (1120, 72814), (1372, 59440), (1486, 54880), (1568, 52010), (1715, 47552), (1960, 41608), (2240, 36407), (2744, 29720), (2972, 27440), (3136, 26005), (3430, 23776), (3715, 21952), (3920, 20804), (5201, 15680), (5488, 14860), (5944, 13720), (6860, 11888), (7430, 10976), (7840, 10402)]