21055095

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1619}}^1$

素因数の和:1664

約数の個数: 36

約数和(自身を含む): 38792520

約数和(自身を除く): 17737425

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 289, 765, 867, 1445, 1619, 2601, 4335, 4857, 8095, 13005, 14571, 24285, 27523, 72855, 82569, 137615, 247707, 412845, 467891, 1238535, 1403673, 2339455, 4211019, 7018365, 21055095]

約数ペア:

[(1, 21055095), (3, 7018365), (5, 4211019), (9, 2339455), (15, 1403673), (17, 1238535), (45, 467891), (51, 412845), (85, 247707), (153, 137615), (255, 82569), (289, 72855), (765, 27523), (867, 24285), (1445, 14571), (1619, 13005), (2601, 8095), (4335, 4857)]