221709915

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{541}}^1\times {\mathrm{1301}}^1$

素因数の和:1860

約数の個数: 48

約数和(自身を含む): 440346816

約数和(自身を除く): 218636901

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 541, 1301, 1623, 2705, 3787, 3903, 4869, 6505, 8115, 9107, 11361, 11709, 18935, 19515, 24345, 27321, 34083, 45535, 56805, 58545, 81963, 136605, 170415, 409815, 703841, 2111523, 3519205, 4926887, 6334569, 10557615, 14780661, 24634435, 31672845, 44341983, 73903305, 221709915]

約数ペア:

[(1, 221709915), (3, 73903305), (5, 44341983), (7, 31672845), (9, 24634435), (15, 14780661), (21, 10557615), (35, 6334569), (45, 4926887), (63, 3519205), (105, 2111523), (315, 703841), (541, 409815), (1301, 170415), (1623, 136605), (2705, 81963), (3787, 58545), (3903, 56805), (4869, 45535), (6505, 34083), (8115, 27321), (9107, 24345), (11361, 19515), (11709, 18935)]