289349320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{556441}}^1$

素因数の和:556465

約数の個数: 32

約数和(自身を含む): 701116920

約数和(自身を除く): 411767600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 556441, 1112882, 2225764, 2782205, 4451528, 5564410, 7233733, 11128820, 14467466, 22257640, 28934932, 36168665, 57869864, 72337330, 144674660, 289349320]

約数ペア:

[(1, 289349320), (2, 144674660), (4, 72337330), (5, 57869864), (8, 36168665), (10, 28934932), (13, 22257640), (20, 14467466), (26, 11128820), (40, 7233733), (52, 5564410), (65, 4451528), (104, 2782205), (130, 2225764), (260, 1112882), (520, 556441)]