15378520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8941}}^1$

素因数の和:8995

約数の個数: 32

約数和(自身を含む): 35410320

約数和(自身を除く): 20031800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 8941, 17882, 35764, 44705, 71528, 89410, 178820, 357640, 384463, 768926, 1537852, 1922315, 3075704, 3844630, 7689260, 15378520]

約数ペア:

[(1, 15378520), (2, 7689260), (4, 3844630), (5, 3075704), (8, 1922315), (10, 1537852), (20, 768926), (40, 384463), (43, 357640), (86, 178820), (172, 89410), (215, 71528), (344, 44705), (430, 35764), (860, 17882), (1720, 8941)]