12718979

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{487}}^1$

素因数の和:555

約数の個数: 24

約数和(自身を含む): 16355808

約数和(自身を除く): 3636829

約数列:

[1, 7, 13, 41, 49, 91, 287, 487, 533, 637, 2009, 3409, 3731, 6331, 19967, 23863, 26117, 44317, 139769, 259571, 310219, 978383, 1816997, 12718979]

約数ペア:

[(1, 12718979), (7, 1816997), (13, 978383), (41, 310219), (49, 259571), (91, 139769), (287, 44317), (487, 26117), (533, 23863), (637, 19967), (2009, 6331), (3409, 3731)]