21696129

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{449}}^1$

素因数の和:534

約数の個数: 48

約数和(自身を含む): 39312000

約数和(自身を除く): 17615871

約数列:

[1, 3, 7, 9, 13, 21, 39, 59, 63, 91, 117, 177, 273, 413, 449, 531, 767, 819, 1239, 1347, 2301, 3143, 3717, 4041, 5369, 5837, 6903, 9429, 16107, 17511, 26491, 28287, 40859, 48321, 52533, 79473, 122577, 185437, 238419, 344383, 367731, 556311, 1033149, 1668933, 2410681, 3099447, 7232043, 21696129]

約数ペア:

[(1, 21696129), (3, 7232043), (7, 3099447), (9, 2410681), (13, 1668933), (21, 1033149), (39, 556311), (59, 367731), (63, 344383), (91, 238419), (117, 185437), (177, 122577), (273, 79473), (413, 52533), (449, 48321), (531, 40859), (767, 28287), (819, 26491), (1239, 17511), (1347, 16107), (2301, 9429), (3143, 6903), (3717, 5837), (4041, 5369)]