81141320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{156041}}^1$

素因数の和:156065

約数の個数: 32

約数和(自身を含む): 196612920

約数和(自身を除く): 115471600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 156041, 312082, 624164, 780205, 1248328, 1560410, 2028533, 3120820, 4057066, 6241640, 8114132, 10142665, 16228264, 20285330, 40570660, 81141320]

約数ペア:

[(1, 81141320), (2, 40570660), (4, 20285330), (5, 16228264), (8, 10142665), (10, 8114132), (13, 6241640), (20, 4057066), (26, 3120820), (40, 2028533), (52, 1560410), (65, 1248328), (104, 780205), (130, 624164), (260, 312082), (520, 156041)]