31260040

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{389}}^1$

素因数の和:455

約数の個数: 96

約数和(自身を含む): 84029400

約数和(自身を除く): 52769360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 49, 56, 70, 82, 98, 140, 164, 196, 205, 245, 280, 287, 328, 389, 392, 410, 490, 574, 778, 820, 980, 1148, 1435, 1556, 1640, 1945, 1960, 2009, 2296, 2723, 2870, 3112, 3890, 4018, 5446, 5740, 7780, 8036, 10045, 10892, 11480, 13615, 15560, 15949, 16072, 19061, 20090, 21784, 27230, 31898, 38122, 40180, 54460, 63796, 76244, 79745, 80360, 95305, 108920, 111643, 127592, 152488, 159490, 190610, 223286, 318980, 381220, 446572, 558215, 637960, 762440, 781501, 893144, 1116430, 1563002, 2232860, 3126004, 3907505, 4465720, 6252008, 7815010, 15630020, 31260040]

約数ペア:

[(1, 31260040), (2, 15630020), (4, 7815010), (5, 6252008), (7, 4465720), (8, 3907505), (10, 3126004), (14, 2232860), (20, 1563002), (28, 1116430), (35, 893144), (40, 781501), (41, 762440), (49, 637960), (56, 558215), (70, 446572), (82, 381220), (98, 318980), (140, 223286), (164, 190610), (196, 159490), (205, 152488), (245, 127592), (280, 111643), (287, 108920), (328, 95305), (389, 80360), (392, 79745), (410, 76244), (490, 63796), (574, 54460), (778, 40180), (820, 38122), (980, 31898), (1148, 27230), (1435, 21784), (1556, 20090), (1640, 19061), (1945, 16072), (1960, 15949), (2009, 15560), (2296, 13615), (2723, 11480), (2870, 10892), (3112, 10045), (3890, 8036), (4018, 7780), (5446, 5740)]