28718872

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{383}}^1$

素因数の和:512

約数の個数: 64

約数和(自身を含む): 67092480

約数和(自身を除く): 38373608

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 103, 104, 182, 206, 364, 383, 412, 721, 728, 766, 824, 1339, 1442, 1532, 2678, 2681, 2884, 3064, 4979, 5356, 5362, 5768, 9373, 9958, 10712, 10724, 18746, 19916, 21448, 34853, 37492, 39449, 39832, 69706, 74984, 78898, 139412, 157796, 276143, 278824, 315592, 512837, 552286, 1025674, 1104572, 2051348, 2209144, 3589859, 4102696, 7179718, 14359436, 28718872]

約数ペア:

[(1, 28718872), (2, 14359436), (4, 7179718), (7, 4102696), (8, 3589859), (13, 2209144), (14, 2051348), (26, 1104572), (28, 1025674), (52, 552286), (56, 512837), (91, 315592), (103, 278824), (104, 276143), (182, 157796), (206, 139412), (364, 78898), (383, 74984), (412, 69706), (721, 39832), (728, 39449), (766, 37492), (824, 34853), (1339, 21448), (1442, 19916), (1532, 18746), (2678, 10724), (2681, 10712), (2884, 9958), (3064, 9373), (4979, 5768), (5356, 5362)]