21030295

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{439}}^1$

素因数の和:535

約数の個数: 32

約数和(自身を含む): 30159360

約数和(自身を除く): 9129065

約数列:

[1, 5, 11, 13, 55, 65, 67, 143, 335, 439, 715, 737, 871, 2195, 3685, 4355, 4829, 5707, 9581, 24145, 28535, 29413, 47905, 62777, 147065, 313885, 323543, 382369, 1617715, 1911845, 4206059, 21030295]

約数ペア:

[(1, 21030295), (5, 4206059), (11, 1911845), (13, 1617715), (55, 382369), (65, 323543), (67, 313885), (143, 147065), (335, 62777), (439, 47905), (715, 29413), (737, 28535), (871, 24145), (2195, 9581), (3685, 5707), (4355, 4829)]