81781973

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{947}}^1$

素因数の和:1053

約数の個数: 24

約数和(自身を含む): 102702528

約数和(自身を除く): 20920555

約数列:

[1, 7, 13, 73, 91, 169, 511, 947, 949, 1183, 6629, 6643, 12311, 12337, 69131, 86177, 86359, 160043, 483917, 898703, 1120301, 6290921, 11683139, 81781973]

約数ペア:

[(1, 81781973), (7, 11683139), (13, 6290921), (73, 1120301), (91, 898703), (169, 483917), (511, 160043), (947, 86359), (949, 86177), (1183, 69131), (6629, 12337), (6643, 12311)]