201787551

素因数分解:

$3^3\times 7^1\times {\mathrm{139}}^1\times {\mathrm{7681}}^1$

素因数の和:7836

約数の個数: 32

約数和(自身を含む): 344153600

約数和(自身を除く): 142366049

約数列:

[1, 3, 7, 9, 21, 27, 63, 139, 189, 417, 973, 1251, 2919, 3753, 7681, 8757, 23043, 26271, 53767, 69129, 161301, 207387, 483903, 1067659, 1451709, 3202977, 7473613, 9608931, 22420839, 28826793, 67262517, 201787551]

約数ペア:

[(1, 201787551), (3, 67262517), (7, 28826793), (9, 22420839), (21, 9608931), (27, 7473613), (63, 3202977), (139, 1451709), (189, 1067659), (417, 483903), (973, 207387), (1251, 161301), (2919, 69129), (3753, 53767), (7681, 26271), (8757, 23043)]