821457

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1$

素因数の和:102

約数の個数: 48

約数和(自身を含む): 1572480

約数和(自身を除く): 751023

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 59, 63, 91, 117, 119, 153, 177, 221, 273, 357, 413, 531, 663, 767, 819, 1003, 1071, 1239, 1547, 1989, 2301, 3009, 3717, 4641, 5369, 6903, 7021, 9027, 13039, 13923, 16107, 21063, 39117, 48321, 63189, 91273, 117351, 273819, 821457]

約数ペア:

[(1, 821457), (3, 273819), (7, 117351), (9, 91273), (13, 63189), (17, 48321), (21, 39117), (39, 21063), (51, 16107), (59, 13923), (63, 13039), (91, 9027), (117, 7021), (119, 6903), (153, 5369), (177, 4641), (221, 3717), (273, 3009), (357, 2301), (413, 1989), (531, 1547), (663, 1239), (767, 1071), (819, 1003)]