28561239

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^2\times {\mathrm{857}}^1$

素因数の和:916

約数の個数: 36

約数和(自身を含む): 49345296

約数和(自身を除く): 20784057

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 529, 857, 1449, 1587, 2571, 3703, 4761, 5999, 7713, 11109, 17997, 19711, 33327, 53991, 59133, 137977, 177399, 413931, 453353, 1241793, 1360059, 3173471, 4080177, 9520413, 28561239]

約数ペア:

[(1, 28561239), (3, 9520413), (7, 4080177), (9, 3173471), (21, 1360059), (23, 1241793), (63, 453353), (69, 413931), (161, 177399), (207, 137977), (483, 59133), (529, 53991), (857, 33327), (1449, 19711), (1587, 17997), (2571, 11109), (3703, 7713), (4761, 5999)]