28772289

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^2$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 55124160

約数和(自身を除く): 26351871

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 43, 57, 63, 91, 117, 129, 133, 171, 247, 273, 301, 387, 399, 559, 741, 817, 819, 903, 1197, 1677, 1729, 1849, 2223, 2451, 2709, 3913, 5031, 5187, 5547, 5719, 7353, 10621, 11739, 12943, 15561, 16641, 17157, 24037, 31863, 35131, 35217, 38829, 51471, 72111, 74347, 95589, 105393, 116487, 168259, 216333, 223041, 245917, 316179, 456703, 504777, 669123, 737751, 1370109, 1514331, 2213253, 3196921, 4110327, 9590763, 28772289]

約数ペア:

[(1, 28772289), (3, 9590763), (7, 4110327), (9, 3196921), (13, 2213253), (19, 1514331), (21, 1370109), (39, 737751), (43, 669123), (57, 504777), (63, 456703), (91, 316179), (117, 245917), (129, 223041), (133, 216333), (171, 168259), (247, 116487), (273, 105393), (301, 95589), (387, 74347), (399, 72111), (559, 51471), (741, 38829), (817, 35217), (819, 35131), (903, 31863), (1197, 24037), (1677, 17157), (1729, 16641), (1849, 15561), (2223, 12943), (2451, 11739), (2709, 10621), (3913, 7353), (5031, 5719), (5187, 5547)]