12921965

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{439}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 18395520

約数和(自身を除く): 5473555

約数列:

[1, 5, 7, 29, 35, 145, 203, 439, 841, 1015, 2195, 3073, 4205, 5887, 12731, 15365, 29435, 63655, 89117, 369199, 445585, 1845995, 2584393, 12921965]

約数ペア:

[(1, 12921965), (5, 2584393), (7, 1845995), (29, 445585), (35, 369199), (145, 89117), (203, 63655), (439, 29435), (841, 15365), (1015, 12731), (2195, 5887), (3073, 4205)]