13281320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25541}}^1$

素因数の和:25565

約数の個数: 32

約数和(自身を含む): 32182920

約数和(自身を除く): 18901600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 25541, 51082, 102164, 127705, 204328, 255410, 332033, 510820, 664066, 1021640, 1328132, 1660165, 2656264, 3320330, 6640660, 13281320]

約数ペア:

[(1, 13281320), (2, 6640660), (4, 3320330), (5, 2656264), (8, 1660165), (10, 1328132), (13, 1021640), (20, 664066), (26, 510820), (40, 332033), (52, 255410), (65, 204328), (104, 127705), (130, 102164), (260, 51082), (520, 25541)]