20595005

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 6776515

約数列:

[1, 5, 23, 31, 53, 109, 115, 155, 265, 545, 713, 1219, 1643, 2507, 3379, 3565, 5777, 6095, 8215, 12535, 16895, 28885, 37789, 77717, 132871, 179087, 188945, 388585, 664355, 895435, 4119001, 20595005]

約数ペア:

[(1, 20595005), (5, 4119001), (23, 895435), (31, 664355), (53, 388585), (109, 188945), (115, 179087), (155, 132871), (265, 77717), (545, 37789), (713, 28885), (1219, 16895), (1643, 12535), (2507, 8215), (3379, 6095), (3565, 5777)]