21149385

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{719}}^1$

素因数の和:817

約数の個数: 32

約数和(自身を含む): 35458560

約数和(自身を除く): 14309175

約数列:

[1, 3, 5, 15, 37, 53, 111, 159, 185, 265, 555, 719, 795, 1961, 2157, 3595, 5883, 9805, 10785, 26603, 29415, 38107, 79809, 114321, 133015, 190535, 399045, 571605, 1409959, 4229877, 7049795, 21149385]

約数ペア:

[(1, 21149385), (3, 7049795), (5, 4229877), (15, 1409959), (37, 571605), (53, 399045), (111, 190535), (159, 133015), (185, 114321), (265, 79809), (555, 38107), (719, 29415), (795, 26603), (1961, 10785), (2157, 9805), (3595, 5883)]