7998025

素因数分解:

$5^2\times 7^2\times {\mathrm{6529}}^1$

素因数の和:6553

約数の個数: 18

約数和(自身を含む): 11538510

約数和(自身を除く): 3540485

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 6529, 32645, 45703, 163225, 228515, 319921, 1142575, 1599605, 7998025]

約数ペア:

[(1, 7998025), (5, 1599605), (7, 1142575), (25, 319921), (35, 228515), (49, 163225), (175, 45703), (245, 32645), (1225, 6529)]