78821420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{135899}}^1$

素因数の和:135937

約数の個数: 24

約数和(自身を含む): 171234000

約数和(自身を除く): 92412580

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 135899, 271798, 543596, 679495, 1358990, 2717980, 3941071, 7882142, 15764284, 19705355, 39410710, 78821420]

約数ペア:

[(1, 78821420), (2, 39410710), (4, 19705355), (5, 15764284), (10, 7882142), (20, 3941071), (29, 2717980), (58, 1358990), (116, 679495), (145, 543596), (290, 271798), (580, 135899)]