21225772

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{463}}^1$

素因数の和:697

約数の個数: 24

約数和(自身を含む): 37975616

約数和(自身を除く): 16749844

約数列:

[1, 2, 4, 73, 146, 157, 292, 314, 463, 628, 926, 1852, 11461, 22922, 33799, 45844, 67598, 72691, 135196, 145382, 290764, 5306443, 10612886, 21225772]

約数ペア:

[(1, 21225772), (2, 10612886), (4, 5306443), (73, 290764), (146, 145382), (157, 135196), (292, 72691), (314, 67598), (463, 45844), (628, 33799), (926, 22922), (1852, 11461)]