13257320

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1223}}^1$

素因数の和:1505

約数の個数: 32

約数和(自身を含む): 29963520

約数和(自身を除く): 16706200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1223, 1355, 2168, 2446, 2710, 4892, 5420, 6115, 9784, 10840, 12230, 24460, 48920, 331433, 662866, 1325732, 1657165, 2651464, 3314330, 6628660, 13257320]

約数ペア:

[(1, 13257320), (2, 6628660), (4, 3314330), (5, 2651464), (8, 1657165), (10, 1325732), (20, 662866), (40, 331433), (271, 48920), (542, 24460), (1084, 12230), (1223, 10840), (1355, 9784), (2168, 6115), (2446, 5420), (2710, 4892)]