18948839

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{197}}^1$

素因数の和:375

約数の個数: 24

約数和(自身を含む): 24016608

約数和(自身を除く): 5067769

約数列:

[1, 7, 13, 49, 91, 151, 197, 637, 1057, 1379, 1963, 2561, 7399, 9653, 13741, 17927, 29747, 96187, 125489, 208229, 386711, 1457603, 2706977, 18948839]

約数ペア:

[(1, 18948839), (7, 2706977), (13, 1457603), (49, 386711), (91, 208229), (151, 125489), (197, 96187), (637, 29747), (1057, 17927), (1379, 13741), (1963, 9653), (2561, 7399)]