20806331

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{367}}^1$

素因数の和:483

約数の個数: 24

約数和(自身を含む): 26429760

約数和(自身を除く): 5623429

約数列:

[1, 7, 13, 49, 89, 91, 367, 623, 637, 1157, 2569, 4361, 4771, 8099, 17983, 32663, 33397, 56693, 228641, 233779, 424619, 1600487, 2972333, 20806331]

約数ペア:

[(1, 20806331), (7, 2972333), (13, 1600487), (49, 424619), (89, 233779), (91, 228641), (367, 56693), (623, 33397), (637, 32663), (1157, 17983), (2569, 8099), (4361, 4771)]