28564137

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6571}}^1$

素因数の和:6610

約数の個数: 32

約数和(自身を含む): 50472960

約数和(自身を除く): 21908823

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 161, 189, 207, 483, 621, 1449, 4347, 6571, 19713, 45997, 59139, 137991, 151133, 177417, 413973, 453399, 1057931, 1241919, 1360197, 3173793, 4080591, 9521379, 28564137]

約数ペア:

[(1, 28564137), (3, 9521379), (7, 4080591), (9, 3173793), (21, 1360197), (23, 1241919), (27, 1057931), (63, 453399), (69, 413973), (161, 177417), (189, 151133), (207, 137991), (483, 59139), (621, 45997), (1449, 19713), (4347, 6571)]