21406979

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{353}}^1$

素因数の和:550

約数の個数: 16

約数和(自身を含む): 24213600

約数和(自身を除く): 2806621

約数列:

[1, 11, 37, 149, 353, 407, 1639, 3883, 5513, 13061, 52597, 60643, 143671, 578567, 1946089, 21406979]

約数ペア:

[(1, 21406979), (11, 1946089), (37, 578567), (149, 143671), (353, 60643), (407, 52597), (1639, 13061), (3883, 5513)]