20255721

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{383}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 29236224

約数和(自身を除く): 8980503

約数列:

[1, 3, 17, 51, 61, 183, 289, 383, 867, 1037, 1149, 3111, 6511, 17629, 19533, 23363, 52887, 70089, 110687, 332061, 397171, 1191513, 6751907, 20255721]

約数ペア:

[(1, 20255721), (3, 6751907), (17, 1191513), (51, 397171), (61, 332061), (183, 110687), (289, 70089), (383, 52887), (867, 23363), (1037, 19533), (1149, 17629), (3111, 6511)]