15980780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{13099}}^1$

素因数の和:13169

約数の個数: 24

約数和(自身を含む): 34112400

約数和(自身を除く): 18131620

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 13099, 26198, 52396, 65495, 130990, 261980, 799039, 1598078, 3196156, 3995195, 7990390, 15980780]

約数ペア:

[(1, 15980780), (2, 7990390), (4, 3995195), (5, 3196156), (10, 1598078), (20, 799039), (61, 261980), (122, 130990), (244, 65495), (305, 52396), (610, 26198), (1220, 13099)]