127889320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{245941}}^1$

素因数の和:245965

約数の個数: 32

約数和(自身を含む): 309886920

約数和(自身を除く): 181997600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 245941, 491882, 983764, 1229705, 1967528, 2459410, 3197233, 4918820, 6394466, 9837640, 12788932, 15986165, 25577864, 31972330, 63944660, 127889320]

約数ペア:

[(1, 127889320), (2, 63944660), (4, 31972330), (5, 25577864), (8, 15986165), (10, 12788932), (13, 9837640), (20, 6394466), (26, 4918820), (40, 3197233), (52, 2459410), (65, 1967528), (104, 1229705), (130, 983764), (260, 491882), (520, 245941)]