28784315

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{6911}}^1$

素因数の和:6947

約数の個数: 24

約数和(自身を含む): 42550272

約数和(自身を除く): 13765957

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 245, 595, 833, 4165, 6911, 34555, 48377, 117487, 241885, 338639, 587435, 822409, 1693195, 4112045, 5756863, 28784315]

約数ペア:

[(1, 28784315), (5, 5756863), (7, 4112045), (17, 1693195), (35, 822409), (49, 587435), (85, 338639), (119, 241885), (245, 117487), (595, 48377), (833, 34555), (4165, 6911)]