207821705

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{661}}^1\times {\mathrm{691}}^1$

素因数の和:1377

約数の個数: 32

約数和(自身を含む): 307845888

約数和(自身を除く): 100024183

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 661, 691, 3305, 3455, 4627, 4837, 8593, 8983, 23135, 24185, 42965, 44915, 60151, 62881, 300755, 314405, 456751, 2283755, 3197257, 5937763, 15986285, 29688815, 41564341, 207821705]

約数ペア:

[(1, 207821705), (5, 41564341), (7, 29688815), (13, 15986285), (35, 5937763), (65, 3197257), (91, 2283755), (455, 456751), (661, 314405), (691, 300755), (3305, 62881), (3455, 60151), (4627, 44915), (4837, 42965), (8593, 24185), (8983, 23135)]