18718964

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{349}}^1$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 38102400

約数和(自身を除く): 19383436

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 53, 92, 106, 212, 253, 349, 506, 583, 698, 1012, 1166, 1219, 1396, 2332, 2438, 3839, 4876, 7678, 8027, 13409, 15356, 16054, 18497, 26818, 32108, 36994, 53636, 73988, 88297, 176594, 203467, 353188, 406934, 425431, 813868, 850862, 1701724, 4679741, 9359482, 18718964]

約数ペア:

[(1, 18718964), (2, 9359482), (4, 4679741), (11, 1701724), (22, 850862), (23, 813868), (44, 425431), (46, 406934), (53, 353188), (92, 203467), (106, 176594), (212, 88297), (253, 73988), (349, 53636), (506, 36994), (583, 32108), (698, 26818), (1012, 18497), (1166, 16054), (1219, 15356), (1396, 13409), (2332, 8027), (2438, 7678), (3839, 4876)]