21293492

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{397}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 43327872

約数和(自身を除く): 22034380

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 53, 92, 106, 212, 253, 397, 506, 583, 794, 1012, 1166, 1219, 1588, 2332, 2438, 4367, 4876, 8734, 9131, 13409, 17468, 18262, 21041, 26818, 36524, 42082, 53636, 84164, 100441, 200882, 231451, 401764, 462902, 483943, 925804, 967886, 1935772, 5323373, 10646746, 21293492]

約数ペア:

[(1, 21293492), (2, 10646746), (4, 5323373), (11, 1935772), (22, 967886), (23, 925804), (44, 483943), (46, 462902), (53, 401764), (92, 231451), (106, 200882), (212, 100441), (253, 84164), (397, 53636), (506, 42082), (583, 36524), (794, 26818), (1012, 21041), (1166, 18262), (1219, 17468), (1588, 13409), (2332, 9131), (2438, 8734), (4367, 4876)]