20986075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^2$

素因数の和:172

約数の個数: 36

約数和(自身を含む): 30513672

約数和(自身を除く): 9527597

約数列:

[1, 5, 11, 17, 25, 55, 67, 85, 187, 275, 335, 425, 737, 935, 1139, 1675, 3685, 4489, 4675, 5695, 12529, 18425, 22445, 28475, 49379, 62645, 76313, 112225, 246895, 313225, 381565, 839443, 1234475, 1907825, 4197215, 20986075]

約数ペア:

[(1, 20986075), (5, 4197215), (11, 1907825), (17, 1234475), (25, 839443), (55, 381565), (67, 313225), (85, 246895), (187, 112225), (275, 76313), (335, 62645), (425, 49379), (737, 28475), (935, 22445), (1139, 18425), (1675, 12529), (3685, 5695), (4489, 4675)]