71781320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{138041}}^1$

素因数の和:138065

約数の個数: 32

約数和(自身を含む): 173932920

約数和(自身を除く): 102151600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 138041, 276082, 552164, 690205, 1104328, 1380410, 1794533, 2760820, 3589066, 5521640, 7178132, 8972665, 14356264, 17945330, 35890660, 71781320]

約数ペア:

[(1, 71781320), (2, 35890660), (4, 17945330), (5, 14356264), (8, 8972665), (10, 7178132), (13, 5521640), (20, 3589066), (26, 2760820), (40, 1794533), (52, 1380410), (65, 1104328), (104, 690205), (130, 552164), (260, 276082), (520, 138041)]