21244265

素因数分解:

$5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 30191616

約数和(自身を除く): 8947351

約数列:

[1, 5, 7, 35, 71, 83, 103, 355, 415, 497, 515, 581, 721, 2485, 2905, 3605, 5893, 7313, 8549, 29465, 36565, 41251, 42745, 51191, 59843, 206255, 255955, 299215, 606979, 3034895, 4248853, 21244265]

約数ペア:

[(1, 21244265), (5, 4248853), (7, 3034895), (35, 606979), (71, 299215), (83, 255955), (103, 206255), (355, 59843), (415, 51191), (497, 42745), (515, 41251), (581, 36565), (721, 29465), (2485, 8549), (2905, 7313), (3605, 5893)]