19407519

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:233

約数の個数: 40

約数和(自身を含む): 30666240

約数和(自身を除く): 11258721

約数列:

[1, 3, 9, 27, 31, 59, 81, 93, 131, 177, 279, 393, 531, 837, 1179, 1593, 1829, 2511, 3537, 4061, 4779, 5487, 7729, 10611, 12183, 16461, 23187, 36549, 49383, 69561, 109647, 148149, 208683, 239599, 328941, 626049, 718797, 2156391, 6469173, 19407519]

約数ペア:

[(1, 19407519), (3, 6469173), (9, 2156391), (27, 718797), (31, 626049), (59, 328941), (81, 239599), (93, 208683), (131, 148149), (177, 109647), (279, 69561), (393, 49383), (531, 36549), (837, 23187), (1179, 16461), (1593, 12183), (1829, 10611), (2511, 7729), (3537, 5487), (4061, 4779)]