19899231

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:559

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 11204769

約数列:

[1, 3, 11, 17, 33, 51, 79, 187, 237, 449, 561, 869, 1343, 1347, 2607, 4029, 4939, 7633, 14773, 14817, 22899, 35471, 44319, 83963, 106413, 251889, 390181, 603007, 1170543, 1809021, 6633077, 19899231]

約数ペア:

[(1, 19899231), (3, 6633077), (11, 1809021), (17, 1170543), (33, 603007), (51, 390181), (79, 251889), (187, 106413), (237, 83963), (449, 44319), (561, 35471), (869, 22899), (1343, 14817), (1347, 14773), (2607, 7633), (4029, 4939)]