21311578

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{233}}^1$

素因数の和:366

約数の個数: 32

約数和(自身を含む): 35380800

約数和(自身を除く): 14069222

約数列:

[1, 2, 19, 29, 38, 58, 83, 166, 233, 466, 551, 1102, 1577, 2407, 3154, 4427, 4814, 6757, 8854, 13514, 19339, 38678, 45733, 91466, 128383, 256766, 367441, 560831, 734882, 1121662, 10655789, 21311578]

約数ペア:

[(1, 21311578), (2, 10655789), (19, 1121662), (29, 734882), (38, 560831), (58, 367441), (83, 256766), (166, 128383), (233, 91466), (466, 45733), (551, 38678), (1102, 19339), (1577, 13514), (2407, 8854), (3154, 6757), (4427, 4814)]