21753285

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3709}}^1$

素因数の和:3757

約数の個数: 32

約数和(自身を含む): 38465280

約数和(自身を除く): 16711995

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 85, 115, 255, 345, 391, 1173, 1955, 3709, 5865, 11127, 18545, 55635, 63053, 85307, 189159, 255921, 315265, 426535, 945795, 1279605, 1450219, 4350657, 7251095, 21753285]

約数ペア:

[(1, 21753285), (3, 7251095), (5, 4350657), (15, 1450219), (17, 1279605), (23, 945795), (51, 426535), (69, 315265), (85, 255921), (115, 189159), (255, 85307), (345, 63053), (391, 55635), (1173, 18545), (1955, 11127), (3709, 5865)]