18678525

素因数分解:

$3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 32569344

約数和(自身を除く): 13890819

約数列:

[1, 3, 5, 15, 25, 37, 53, 75, 111, 127, 159, 185, 265, 381, 555, 635, 795, 925, 1325, 1905, 1961, 2775, 3175, 3975, 4699, 5883, 6731, 9525, 9805, 14097, 20193, 23495, 29415, 33655, 49025, 70485, 100965, 117475, 147075, 168275, 249047, 352425, 504825, 747141, 1245235, 3735705, 6226175, 18678525]

約数ペア:

[(1, 18678525), (3, 6226175), (5, 3735705), (15, 1245235), (25, 747141), (37, 504825), (53, 352425), (75, 249047), (111, 168275), (127, 147075), (159, 117475), (185, 100965), (265, 70485), (381, 49025), (555, 33655), (635, 29415), (795, 23495), (925, 20193), (1325, 14097), (1905, 9805), (1961, 9525), (2775, 6731), (3175, 5883), (3975, 4699)]