21207075

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16633}}^1$

素因数の和:16663

約数の個数: 24

約数和(自身を含む): 37127088

約数和(自身を除く): 15920013

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16633, 49899, 83165, 249495, 282761, 415825, 848283, 1247475, 1413805, 4241415, 7069025, 21207075]

約数ペア:

[(1, 21207075), (3, 7069025), (5, 4241415), (15, 1413805), (17, 1247475), (25, 848283), (51, 415825), (75, 282761), (85, 249495), (255, 83165), (425, 49899), (1275, 16633)]