21428505

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{1153}}^1$

素因数の和:1230

約数の個数: 48

約数和(自身を含む): 43205760

約数和(自身を除く): 21777255

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 59, 63, 105, 177, 295, 315, 413, 531, 885, 1153, 1239, 2065, 2655, 3459, 3717, 5765, 6195, 8071, 10377, 17295, 18585, 24213, 40355, 51885, 68027, 72639, 121065, 204081, 340135, 363195, 476189, 612243, 1020405, 1428567, 2380945, 3061215, 4285701, 7142835, 21428505]

約数ペア:

[(1, 21428505), (3, 7142835), (5, 4285701), (7, 3061215), (9, 2380945), (15, 1428567), (21, 1020405), (35, 612243), (45, 476189), (59, 363195), (63, 340135), (105, 204081), (177, 121065), (295, 72639), (315, 68027), (413, 51885), (531, 40355), (885, 24213), (1153, 18585), (1239, 17295), (2065, 10377), (2655, 8071), (3459, 6195), (3717, 5765)]