19885415

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 27371520

約数和(自身を除く): 7486105

約数列:

[1, 5, 11, 31, 55, 107, 109, 155, 341, 535, 545, 1177, 1199, 1705, 3317, 3379, 5885, 5995, 11663, 16585, 16895, 36487, 37169, 58315, 128293, 182435, 185845, 361553, 641465, 1807765, 3977083, 19885415]

約数ペア:

[(1, 19885415), (5, 3977083), (11, 1807765), (31, 641465), (55, 361553), (107, 185845), (109, 182435), (155, 128293), (341, 58315), (535, 37169), (545, 36487), (1177, 16895), (1199, 16585), (1705, 11663), (3317, 5995), (3379, 5885)]