218901605

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 308630784

約数和(自身を除く): 89729179

約数列:

[1, 5, 13, 17, 43, 65, 85, 215, 221, 271, 289, 559, 731, 1105, 1355, 1445, 2795, 3523, 3655, 3757, 4607, 9503, 11653, 12427, 17615, 18785, 23035, 47515, 58265, 59891, 62135, 78319, 151489, 161551, 198101, 299455, 391595, 757445, 807755, 990505, 1018147, 2575313, 3367717, 5090735, 12876565, 16838585, 43780321, 218901605]

約数ペア:

[(1, 218901605), (5, 43780321), (13, 16838585), (17, 12876565), (43, 5090735), (65, 3367717), (85, 2575313), (215, 1018147), (221, 990505), (271, 807755), (289, 757445), (559, 391595), (731, 299455), (1105, 198101), (1355, 161551), (1445, 151489), (2795, 78319), (3523, 62135), (3655, 59891), (3757, 58265), (4607, 47515), (9503, 23035), (11653, 18785), (12427, 17615)]