19808855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 27095040

約数和(自身を除く): 7286185

約数列:

[1, 5, 11, 47, 55, 79, 97, 235, 395, 485, 517, 869, 1067, 2585, 3713, 4345, 4559, 5335, 7663, 18565, 22795, 38315, 40843, 50149, 84293, 204215, 250745, 360161, 421465, 1800805, 3961771, 19808855]

約数ペア:

[(1, 19808855), (5, 3961771), (11, 1800805), (47, 421465), (55, 360161), (79, 250745), (97, 204215), (235, 84293), (395, 50149), (485, 40843), (517, 38315), (869, 22795), (1067, 18565), (2585, 7663), (3713, 5335), (4345, 4559)]