28708491

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{307}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 45219328

約数和(自身を除く): 16510837

約数列:

[1, 3, 7, 21, 61, 73, 183, 219, 307, 427, 511, 921, 1281, 1533, 2149, 4453, 6447, 13359, 18727, 22411, 31171, 56181, 67233, 93513, 131089, 156877, 393267, 470631, 1367071, 4101213, 9569497, 28708491]

約数ペア:

[(1, 28708491), (3, 9569497), (7, 4101213), (21, 1367071), (61, 470631), (73, 393267), (183, 156877), (219, 131089), (307, 93513), (427, 67233), (511, 56181), (921, 31171), (1281, 22411), (1533, 18727), (2149, 13359), (4453, 6447)]