289557320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{556841}}^1$

素因数の和:556865

約数の個数: 32

約数和(自身を含む): 701620920

約数和(自身を除く): 412063600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 556841, 1113682, 2227364, 2784205, 4454728, 5568410, 7238933, 11136820, 14477866, 22273640, 28955732, 36194665, 57911464, 72389330, 144778660, 289557320]

約数ペア:

[(1, 289557320), (2, 144778660), (4, 72389330), (5, 57911464), (8, 36194665), (10, 28955732), (13, 22273640), (20, 14477866), (26, 11136820), (40, 7238933), (52, 5568410), (65, 4454728), (104, 2784205), (130, 2227364), (260, 1113682), (520, 556841)]