21770485

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{251}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 8711435

約数列:

[1, 5, 11, 19, 55, 83, 95, 209, 251, 415, 913, 1045, 1255, 1577, 2761, 4565, 4769, 7885, 13805, 17347, 20833, 23845, 52459, 86735, 104165, 229163, 262295, 395827, 1145815, 1979135, 4354097, 21770485]

約数ペア:

[(1, 21770485), (5, 4354097), (11, 1979135), (19, 1145815), (55, 395827), (83, 262295), (95, 229163), (209, 104165), (251, 86735), (415, 52459), (913, 23845), (1045, 20833), (1255, 17347), (1577, 13805), (2761, 7885), (4565, 4769)]