28428855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{353}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 57093120

約数和(自身を除く): 28664265

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 59, 65, 91, 105, 177, 195, 273, 295, 353, 413, 455, 767, 885, 1059, 1239, 1365, 1765, 2065, 2301, 2471, 3835, 4589, 5295, 5369, 6195, 7413, 11505, 12355, 13767, 16107, 20827, 22945, 26845, 32123, 37065, 62481, 68835, 80535, 96369, 104135, 145789, 160615, 270751, 312405, 437367, 481845, 728945, 812253, 1353755, 1895257, 2186835, 4061265, 5685771, 9476285, 28428855]

約数ペア:

[(1, 28428855), (3, 9476285), (5, 5685771), (7, 4061265), (13, 2186835), (15, 1895257), (21, 1353755), (35, 812253), (39, 728945), (59, 481845), (65, 437367), (91, 312405), (105, 270751), (177, 160615), (195, 145789), (273, 104135), (295, 96369), (353, 80535), (413, 68835), (455, 62481), (767, 37065), (885, 32123), (1059, 26845), (1239, 22945), (1365, 20827), (1765, 16107), (2065, 13767), (2301, 12355), (2471, 11505), (3835, 7413), (4589, 6195), (5295, 5369)]