21046425

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{971}}^1$

素因数の和:1018

約数の個数: 36

約数和(自身を含む): 37002096

約数和(自身を除く): 15955671

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 289, 425, 867, 971, 1275, 1445, 2913, 4335, 4855, 7225, 14565, 16507, 21675, 24275, 49521, 72825, 82535, 247605, 280619, 412675, 841857, 1238025, 1403095, 4209285, 7015475, 21046425]

約数ペア:

[(1, 21046425), (3, 7015475), (5, 4209285), (15, 1403095), (17, 1238025), (25, 841857), (51, 412675), (75, 280619), (85, 247605), (255, 82535), (289, 72825), (425, 49521), (867, 24275), (971, 21675), (1275, 16507), (1445, 14565), (2913, 7225), (4335, 4855)]