21992245

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 30139776

約数和(自身を除く): 8147531

約数列:

[1, 5, 11, 37, 55, 101, 107, 185, 407, 505, 535, 1111, 1177, 2035, 3737, 3959, 5555, 5885, 10807, 18685, 19795, 41107, 43549, 54035, 118877, 205535, 217745, 399859, 594385, 1999295, 4398449, 21992245]

約数ペア:

[(1, 21992245), (5, 4398449), (11, 1999295), (37, 594385), (55, 399859), (101, 217745), (107, 205535), (185, 118877), (407, 54035), (505, 43549), (535, 41107), (1111, 19795), (1177, 18685), (2035, 10807), (3737, 5885), (3959, 5555)]