28747775

素因数分解:

$5^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2693}}^1$

素因数の和:2771

約数の個数: 24

約数和(自身を含む): 41422944

約数和(自身を除く): 12675169

約数列:

[1, 5, 7, 25, 35, 61, 175, 305, 427, 1525, 2135, 2693, 10675, 13465, 18851, 67325, 94255, 164273, 471275, 821365, 1149911, 4106825, 5749555, 28747775]

約数ペア:

[(1, 28747775), (5, 5749555), (7, 4106825), (25, 1149911), (35, 821365), (61, 471275), (175, 164273), (305, 94255), (427, 67325), (1525, 18851), (2135, 13465), (2693, 10675)]