21113055

素因数分解:

$3^5\times 5^1\times {\mathrm{17377}}^1$

素因数の和:17397

約数の個数: 24

約数和(自身を含む): 37953552

約数和(自身を除く): 16840497

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17377, 52131, 86885, 156393, 260655, 469179, 781965, 1407537, 2345895, 4222611, 7037685, 21113055]

約数ペア:

[(1, 21113055), (3, 7037685), (5, 4222611), (9, 2345895), (15, 1407537), (27, 781965), (45, 469179), (81, 260655), (135, 156393), (243, 86885), (405, 52131), (1215, 17377)]