18708735

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{233}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 30932928

約数和(自身を除く): 12224193

約数列:

[1, 3, 5, 15, 53, 101, 159, 233, 265, 303, 505, 699, 795, 1165, 1515, 3495, 5353, 12349, 16059, 23533, 26765, 37047, 61745, 70599, 80295, 117665, 185235, 352995, 1247249, 3741747, 6236245, 18708735]

約数ペア:

[(1, 18708735), (3, 6236245), (5, 3741747), (15, 1247249), (53, 352995), (101, 185235), (159, 117665), (233, 80295), (265, 70599), (303, 61745), (505, 37047), (699, 26765), (795, 23533), (1165, 16059), (1515, 12349), (3495, 5353)]