20648089

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 6723431

約数列:

[1, 7, 11, 23, 77, 89, 131, 161, 253, 623, 917, 979, 1441, 1771, 2047, 3013, 6853, 10087, 11659, 14329, 21091, 22517, 33143, 81613, 128249, 157619, 232001, 268157, 897743, 1877099, 2949727, 20648089]

約数ペア:

[(1, 20648089), (7, 2949727), (11, 1877099), (23, 897743), (77, 268157), (89, 232001), (131, 157619), (161, 128249), (253, 81613), (623, 33143), (917, 22517), (979, 21091), (1441, 14329), (1771, 11659), (2047, 10087), (3013, 6853)]