21167690140

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19969519}}^1$

素因数の和:19969581

約数の個数: 24

約数和(自身を含む): 45290871360

約数和(自身を除く): 24123181220

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 19969519, 39939038, 79878076, 99847595, 199695190, 399390380, 1058384507, 2116769014, 4233538028, 5291922535, 10583845070, 21167690140]

約数ペア:

[(1, 21167690140), (2, 10583845070), (4, 5291922535), (5, 4233538028), (10, 2116769014), (20, 1058384507), (53, 399390380), (106, 199695190), (212, 99847595), (265, 79878076), (530, 39939038), (1060, 19969519)]