20433987

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 36424960

約数和(自身を除く): 15990973

約数列:

[1, 3, 7, 9, 19, 21, 43, 57, 63, 129, 133, 171, 301, 387, 397, 399, 817, 903, 1191, 1197, 2451, 2709, 2779, 3573, 5719, 7353, 7543, 8337, 17071, 17157, 22629, 25011, 51213, 51471, 52801, 67887, 119497, 153639, 158403, 324349, 358491, 475209, 973047, 1075473, 2270443, 2919141, 6811329, 20433987]

約数ペア:

[(1, 20433987), (3, 6811329), (7, 2919141), (9, 2270443), (19, 1075473), (21, 973047), (43, 475209), (57, 358491), (63, 324349), (129, 158403), (133, 153639), (171, 119497), (301, 67887), (387, 52801), (397, 51471), (399, 51213), (817, 25011), (903, 22629), (1191, 17157), (1197, 17071), (2451, 8337), (2709, 7543), (2779, 7353), (3573, 5719)]