18978.00000000

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{449}}^1$

素因数の和:623

約数の個数: 32

約数和(自身を含む): 104328000

約数和(自身を除く): 28359445

約数列:

[1, 5, 13, 19, 65, 95, 137, 247, 449, 685, 1235, 1781, 2245, 2603, 5837, 8531, 8905, 13015, 29185, 33839, 42655, 61513, 110903, 169195, 307565, 554515, 799669, 1168747, 3998345, 5843735, 15193711, 75968555]

約数ペア:

[(1, 75968555), (5, 15193711), (13, 5843735), (19, 3998345), (65, 1168747), (95, 799669), (137, 554515), (247, 307565), (449, 169195), (685, 110903), (1235, 61513), (1781, 42655), (2245, 33839), (2603, 29185), (5837, 13015), (8531, 8905)]