18686759

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 24366720

約数和(自身を除く): 5679961

約数列:

[1, 7, 13, 29, 73, 91, 97, 203, 377, 511, 679, 949, 1261, 2117, 2639, 2813, 6643, 7081, 8827, 14819, 19691, 27521, 36569, 49567, 92053, 192647, 205349, 255983, 644371, 1437443, 2669537, 18686759]

約数ペア:

[(1, 18686759), (7, 2669537), (13, 1437443), (29, 644371), (73, 255983), (91, 205349), (97, 192647), (203, 92053), (377, 49567), (511, 36569), (679, 27521), (949, 19691), (1261, 14819), (2117, 8827), (2639, 7081), (2813, 6643)]