20913739

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{241}}^1$

素因数の和:296

約数の個数: 32

約数和(自身を含む): 27878400

約数和(自身を除く): 6964661

約数列:

[1, 7, 11, 23, 49, 77, 161, 241, 253, 343, 539, 1127, 1687, 1771, 2651, 3773, 5543, 7889, 11809, 12397, 18557, 38801, 60973, 82663, 86779, 129899, 271607, 426811, 909293, 1901249, 2987677, 20913739]

約数ペア:

[(1, 20913739), (7, 2987677), (11, 1901249), (23, 909293), (49, 426811), (77, 271607), (161, 129899), (241, 86779), (253, 82663), (343, 60973), (539, 38801), (1127, 18557), (1687, 12397), (1771, 11809), (2651, 7889), (3773, 5543)]