21000391605

素因数分解:

$3^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{950459}}^1$

素因数の和:950961

約数の個数: 24

約数和(自身を含む): 36474852960

約数和(自身を除く): 15474461355

約数列:

[1, 3, 5, 9, 15, 45, 491, 1473, 2455, 4419, 7365, 22095, 950459, 2851377, 4752295, 8554131, 14256885, 42770655, 466675369, 1400026107, 2333376845, 4200078321, 7000130535, 21000391605]

約数ペア:

[(1, 21000391605), (3, 7000130535), (5, 4200078321), (9, 2333376845), (15, 1400026107), (45, 466675369), (491, 42770655), (1473, 14256885), (2455, 8554131), (4419, 4752295), (7365, 2851377), (22095, 950459)]