21798425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2557}}^1$

素因数の和:2609

約数の個数: 24

約数和(自身を含む): 30450432

約数和(自身を除く): 8652007

約数列:

[1, 5, 11, 25, 31, 55, 155, 275, 341, 775, 1705, 2557, 8525, 12785, 28127, 63925, 79267, 140635, 396335, 703175, 871937, 1981675, 4359685, 21798425]

約数ペア:

[(1, 21798425), (5, 4359685), (11, 1981675), (25, 871937), (31, 703175), (55, 396335), (155, 140635), (275, 79267), (341, 63925), (775, 28127), (1705, 12785), (2557, 8525)]