21505833

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{367}}^1\times {\mathrm{383}}^1$

素因数の和:773

約数の個数: 24

約数和(自身を含む): 33067008

約数和(自身を除く): 11561175

約数列:

[1, 3, 9, 17, 51, 153, 367, 383, 1101, 1149, 3303, 3447, 6239, 6511, 18717, 19533, 56151, 58599, 140561, 421683, 1265049, 2389537, 7168611, 21505833]

約数ペア:

[(1, 21505833), (3, 7168611), (9, 2389537), (17, 1265049), (51, 421683), (153, 140561), (367, 58599), (383, 56151), (1101, 19533), (1149, 18717), (3303, 6511), (3447, 6239)]