81581080

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:521

約数の個数: 96

約数和(自身を含む): 216075600

約数和(自身を除く): 134494520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 107, 140, 196, 214, 245, 280, 389, 392, 428, 490, 535, 749, 778, 856, 980, 1070, 1498, 1556, 1945, 1960, 2140, 2723, 2996, 3112, 3745, 3890, 4280, 5243, 5446, 5992, 7490, 7780, 10486, 10892, 13615, 14980, 15560, 19061, 20972, 21784, 26215, 27230, 29960, 38122, 41623, 41944, 52430, 54460, 76244, 83246, 95305, 104860, 108920, 152488, 166492, 190610, 208115, 209720, 291361, 332984, 381220, 416230, 582722, 762440, 832460, 1165444, 1456805, 1664920, 2039527, 2330888, 2913610, 4079054, 5827220, 8158108, 10197635, 11654440, 16316216, 20395270, 40790540, 81581080]

約数ペア:

[(1, 81581080), (2, 40790540), (4, 20395270), (5, 16316216), (7, 11654440), (8, 10197635), (10, 8158108), (14, 5827220), (20, 4079054), (28, 2913610), (35, 2330888), (40, 2039527), (49, 1664920), (56, 1456805), (70, 1165444), (98, 832460), (107, 762440), (140, 582722), (196, 416230), (214, 381220), (245, 332984), (280, 291361), (389, 209720), (392, 208115), (428, 190610), (490, 166492), (535, 152488), (749, 108920), (778, 104860), (856, 95305), (980, 83246), (1070, 76244), (1498, 54460), (1556, 52430), (1945, 41944), (1960, 41623), (2140, 38122), (2723, 29960), (2996, 27230), (3112, 26215), (3745, 21784), (3890, 20972), (4280, 19061), (5243, 15560), (5446, 14980), (5992, 13615), (7490, 10892), (7780, 10486)]