28912390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{222403}}^1$

素因数の和:222423

約数の個数: 16

約数和(自身を含む): 56045808

約数和(自身を除く): 27133418

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 222403, 444806, 1112015, 2224030, 2891239, 5782478, 14456195, 28912390]

約数ペア:

[(1, 28912390), (2, 14456195), (5, 5782478), (10, 2891239), (13, 2224030), (26, 1112015), (65, 444806), (130, 222403)]