21297315

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{733}}^1$

素因数の和:903

約数の個数: 32

約数和(自身を含む): 36993600

約数和(自身を除く): 15696285

約数列:

[1, 3, 5, 13, 15, 39, 65, 149, 195, 447, 733, 745, 1937, 2199, 2235, 3665, 5811, 9529, 9685, 10995, 28587, 29055, 47645, 109217, 142935, 327651, 546085, 1419821, 1638255, 4259463, 7099105, 21297315]

約数ペア:

[(1, 21297315), (3, 7099105), (5, 4259463), (13, 1638255), (15, 1419821), (39, 546085), (65, 327651), (149, 142935), (195, 109217), (447, 47645), (733, 29055), (745, 28587), (1937, 10995), (2199, 9685), (2235, 9529), (3665, 5811)]