390278

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{457}}^1$

素因数の和:527

約数の個数: 16

約数和(自身を含む): 681504

約数和(自身を除く): 291226

約数列:

[1, 2, 7, 14, 61, 122, 427, 457, 854, 914, 3199, 6398, 27877, 55754, 195139, 390278]

約数ペア:

[(1, 390278), (2, 195139), (7, 55754), (14, 27877), (61, 6398), (122, 3199), (427, 914), (457, 854)]