21288675

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{283}}^1$

素因数の和:372

約数の個数: 48

約数和(自身を含む): 38033280

約数和(自身を除く): 16744605

約数列:

[1, 3, 5, 15, 17, 25, 51, 59, 75, 85, 177, 255, 283, 295, 425, 849, 885, 1003, 1275, 1415, 1475, 3009, 4245, 4425, 4811, 5015, 7075, 14433, 15045, 16697, 21225, 24055, 25075, 50091, 72165, 75225, 83485, 120275, 250455, 283849, 360825, 417425, 851547, 1252275, 1419245, 4257735, 7096225, 21288675]

約数ペア:

[(1, 21288675), (3, 7096225), (5, 4257735), (15, 1419245), (17, 1252275), (25, 851547), (51, 417425), (59, 360825), (75, 283849), (85, 250455), (177, 120275), (255, 83485), (283, 75225), (295, 72165), (425, 50091), (849, 25075), (885, 24055), (1003, 21225), (1275, 16697), (1415, 15045), (1475, 14433), (3009, 7075), (4245, 5015), (4425, 4811)]