18881475

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{251}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 33747840

約数和(自身を除く): 14866365

約数列:

[1, 3, 5, 15, 17, 25, 51, 59, 75, 85, 177, 251, 255, 295, 425, 753, 885, 1003, 1255, 1275, 1475, 3009, 3765, 4267, 4425, 5015, 6275, 12801, 14809, 15045, 18825, 21335, 25075, 44427, 64005, 74045, 75225, 106675, 222135, 251753, 320025, 370225, 755259, 1110675, 1258765, 3776295, 6293825, 18881475]

約数ペア:

[(1, 18881475), (3, 6293825), (5, 3776295), (15, 1258765), (17, 1110675), (25, 755259), (51, 370225), (59, 320025), (75, 251753), (85, 222135), (177, 106675), (251, 75225), (255, 74045), (295, 64005), (425, 44427), (753, 25075), (885, 21335), (1003, 18825), (1255, 15045), (1275, 14809), (1475, 12801), (3009, 6275), (3765, 5015), (4267, 4425)]