21494291

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{823}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 27617184

約数和(自身を除く): 6122893

約数列:

[1, 7, 13, 41, 49, 91, 287, 533, 637, 823, 2009, 3731, 5761, 10699, 26117, 33743, 40327, 74893, 236201, 438659, 524251, 1653407, 3070613, 21494291]

約数ペア:

[(1, 21494291), (7, 3070613), (13, 1653407), (41, 524251), (49, 438659), (91, 236201), (287, 74893), (533, 40327), (637, 33743), (823, 26117), (2009, 10699), (3731, 5761)]