21116277

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1$

素因数の和:127

約数の個数: 96

約数和(自身を含む): 41932800

約数和(自身を除く): 20816523

約数列:

[1, 3, 7, 9, 13, 19, 21, 23, 39, 57, 59, 63, 69, 91, 117, 133, 161, 171, 177, 207, 247, 273, 299, 399, 413, 437, 483, 531, 741, 767, 819, 897, 1121, 1197, 1239, 1311, 1357, 1449, 1729, 2093, 2223, 2301, 2691, 3059, 3363, 3717, 3933, 4071, 5187, 5369, 5681, 6279, 6903, 7847, 9177, 9499, 10089, 12213, 14573, 15561, 16107, 17043, 17641, 18837, 23541, 25783, 27531, 28497, 39767, 43719, 48321, 51129, 52923, 70623, 77349, 85491, 102011, 119301, 123487, 131157, 158769, 180481, 232047, 306033, 335179, 357903, 370461, 541443, 918099, 1005537, 1111383, 1624329, 2346253, 3016611, 7038759, 21116277]

約数ペア:

[(1, 21116277), (3, 7038759), (7, 3016611), (9, 2346253), (13, 1624329), (19, 1111383), (21, 1005537), (23, 918099), (39, 541443), (57, 370461), (59, 357903), (63, 335179), (69, 306033), (91, 232047), (117, 180481), (133, 158769), (161, 131157), (171, 123487), (177, 119301), (207, 102011), (247, 85491), (273, 77349), (299, 70623), (399, 52923), (413, 51129), (437, 48321), (483, 43719), (531, 39767), (741, 28497), (767, 27531), (819, 25783), (897, 23541), (1121, 18837), (1197, 17641), (1239, 17043), (1311, 16107), (1357, 15561), (1449, 14573), (1729, 12213), (2093, 10089), (2223, 9499), (2301, 9177), (2691, 7847), (3059, 6903), (3363, 6279), (3717, 5681), (3933, 5369), (4071, 5187)]