211009995

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{223291}}^1$

素因数の和:223312

約数の個数: 32

約数和(自身を含む): 428720640

約数和(自身を除く): 217710645

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 223291, 669873, 1116455, 1563037, 2009619, 3349365, 4689111, 6028857, 7815185, 10048095, 14067333, 23445555, 30144285, 42201999, 70336665, 211009995]

約数ペア:

[(1, 211009995), (3, 70336665), (5, 42201999), (7, 30144285), (9, 23445555), (15, 14067333), (21, 10048095), (27, 7815185), (35, 6028857), (45, 4689111), (63, 3349365), (105, 2009619), (135, 1563037), (189, 1116455), (315, 669873), (945, 223291)]