81315136

素因数分解:

$2^6\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{233}}^1$

素因数の和:312

約数の個数: 112

約数和(自身を含む): 199704960

約数和(自身を除く): 118389824

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 41, 56, 64, 76, 82, 112, 133, 152, 164, 224, 233, 266, 287, 304, 328, 448, 466, 532, 574, 608, 656, 779, 932, 1064, 1148, 1216, 1312, 1558, 1631, 1864, 2128, 2296, 2624, 3116, 3262, 3728, 4256, 4427, 4592, 5453, 6232, 6524, 7456, 8512, 8854, 9184, 9553, 10906, 12464, 13048, 14912, 17708, 18368, 19106, 21812, 24928, 26096, 30989, 35416, 38212, 43624, 49856, 52192, 61978, 66871, 70832, 76424, 87248, 104384, 123956, 133742, 141664, 152848, 174496, 181507, 247912, 267484, 283328, 305696, 348992, 363014, 495824, 534968, 611392, 726028, 991648, 1069936, 1270549, 1452056, 1983296, 2139872, 2541098, 2904112, 4279744, 5082196, 5808224, 10164392, 11616448, 20328784, 40657568, 81315136]

約数ペア:

[(1, 81315136), (2, 40657568), (4, 20328784), (7, 11616448), (8, 10164392), (14, 5808224), (16, 5082196), (19, 4279744), (28, 2904112), (32, 2541098), (38, 2139872), (41, 1983296), (56, 1452056), (64, 1270549), (76, 1069936), (82, 991648), (112, 726028), (133, 611392), (152, 534968), (164, 495824), (224, 363014), (233, 348992), (266, 305696), (287, 283328), (304, 267484), (328, 247912), (448, 181507), (466, 174496), (532, 152848), (574, 141664), (608, 133742), (656, 123956), (779, 104384), (932, 87248), (1064, 76424), (1148, 70832), (1216, 66871), (1312, 61978), (1558, 52192), (1631, 49856), (1864, 43624), (2128, 38212), (2296, 35416), (2624, 30989), (3116, 26096), (3262, 24928), (3728, 21812), (4256, 19106), (4427, 18368), (4592, 17708), (5453, 14912), (6232, 13048), (6524, 12464), (7456, 10906), (8512, 9553), (8854, 9184)]