28345473

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 47698560

約数和(自身を除く): 19353087

約数列:

[1, 3, 9, 13, 19, 39, 41, 57, 117, 123, 171, 247, 311, 369, 533, 741, 779, 933, 1599, 2223, 2337, 2799, 4043, 4797, 5909, 7011, 10127, 12129, 12751, 17727, 30381, 36387, 38253, 53181, 76817, 91143, 114759, 165763, 230451, 242269, 497289, 691353, 726807, 1491867, 2180421, 3149497, 9448491, 28345473]

約数ペア:

[(1, 28345473), (3, 9448491), (9, 3149497), (13, 2180421), (19, 1491867), (39, 726807), (41, 691353), (57, 497289), (117, 242269), (123, 230451), (171, 165763), (247, 114759), (311, 91143), (369, 76817), (533, 53181), (741, 38253), (779, 36387), (933, 30381), (1599, 17727), (2223, 12751), (2337, 12129), (2799, 10127), (4043, 7011), (4797, 5909)]