25445540

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{20857}}^1$

素因数の和:20927

約数の個数: 24

約数和(自身を含む): 54314232

約数和(自身を除く): 28868692

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 20857, 41714, 83428, 104285, 208570, 417140, 1272277, 2544554, 5089108, 6361385, 12722770, 25445540]

約数ペア:

[(1, 25445540), (2, 12722770), (4, 6361385), (5, 5089108), (10, 2544554), (20, 1272277), (61, 417140), (122, 208570), (244, 104285), (305, 83428), (610, 41714), (1220, 20857)]