280478

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:104

約数の個数: 24

約数和(自身を含む): 494760

約数和(自身を除く): 214282

約数列:

[1, 2, 11, 19, 22, 38, 61, 121, 122, 209, 242, 418, 671, 1159, 1342, 2299, 2318, 4598, 7381, 12749, 14762, 25498, 140239, 280478]

約数ペア:

[(1, 280478), (2, 140239), (11, 25498), (19, 14762), (22, 12749), (38, 7381), (61, 4598), (121, 2318), (122, 2299), (209, 1342), (242, 1159), (418, 671)]