90871551

素因数分解:

$3^5\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 144668160

約数和(自身を除く): 53796609

約数列:

[1, 3, 9, 23, 27, 69, 71, 81, 207, 213, 229, 243, 621, 639, 687, 1633, 1863, 1917, 2061, 4899, 5267, 5589, 5751, 6183, 14697, 15801, 16259, 17253, 18549, 44091, 47403, 48777, 55647, 132273, 142209, 146331, 373957, 396819, 426627, 438993, 1121871, 1279881, 1316979, 3365613, 3950937, 10096839, 30290517, 90871551]

約数ペア:

[(1, 90871551), (3, 30290517), (9, 10096839), (23, 3950937), (27, 3365613), (69, 1316979), (71, 1279881), (81, 1121871), (207, 438993), (213, 426627), (229, 396819), (243, 373957), (621, 146331), (639, 142209), (687, 132273), (1633, 55647), (1863, 48777), (1917, 47403), (2061, 44091), (4899, 18549), (5267, 17253), (5589, 16259), (5751, 15801), (6183, 14697)]