19869705

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{691}}^1$

素因数の和:779

約数の個数: 40

約数和(自身を含む): 36172224

約数和(自身を除く): 16302519

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 355, 405, 639, 691, 1065, 1917, 2073, 3195, 3455, 5751, 6219, 9585, 10365, 18657, 28755, 31095, 49061, 55971, 93285, 147183, 245305, 279855, 441549, 735915, 1324647, 2207745, 3973941, 6623235, 19869705]

約数ペア:

[(1, 19869705), (3, 6623235), (5, 3973941), (9, 2207745), (15, 1324647), (27, 735915), (45, 441549), (71, 279855), (81, 245305), (135, 147183), (213, 93285), (355, 55971), (405, 49061), (639, 31095), (691, 28755), (1065, 18657), (1917, 10365), (2073, 9585), (3195, 6219), (3455, 5751)]