257942790

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{409433}}^1$

素因数の和:409453

約数の個数: 48

約数和(自身を含む): 766460448

約数和(自身を除く): 508517658

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 409433, 818866, 1228299, 2047165, 2456598, 2866031, 3684897, 4094330, 5732062, 6141495, 7369794, 8598093, 12282990, 14330155, 17196186, 18424485, 25794279, 28660310, 36848970, 42990465, 51588558, 85980930, 128971395, 257942790]

約数ペア:

[(1, 257942790), (2, 128971395), (3, 85980930), (5, 51588558), (6, 42990465), (7, 36848970), (9, 28660310), (10, 25794279), (14, 18424485), (15, 17196186), (18, 14330155), (21, 12282990), (30, 8598093), (35, 7369794), (42, 6141495), (45, 5732062), (63, 4094330), (70, 3684897), (90, 2866031), (105, 2456598), (126, 2047165), (210, 1228299), (315, 818866), (630, 409433)]