28778365

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{4397}}^1$

素因数の和:4437

約数の個数: 32

約数和(自身を含む): 45598464

約数和(自身を除く): 16820099

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 4397, 6545, 21985, 30779, 48367, 74749, 153895, 241835, 338569, 373745, 523243, 822239, 1692845, 2616215, 4111195, 5755673, 28778365]

約数ペア:

[(1, 28778365), (5, 5755673), (7, 4111195), (11, 2616215), (17, 1692845), (35, 822239), (55, 523243), (77, 373745), (85, 338569), (119, 241835), (187, 153895), (385, 74749), (595, 48367), (935, 30779), (1309, 21985), (4397, 6545)]