257038705

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{3389}}^1$

素因数の和:3609

約数の個数: 32

約数和(自身を含む): 386622720

約数和(自身を除く): 129584015

約数列:

[1, 5, 7, 11, 35, 55, 77, 197, 385, 985, 1379, 2167, 3389, 6895, 10835, 15169, 16945, 23723, 37279, 75845, 118615, 186395, 260953, 667633, 1304765, 3338165, 4673431, 7343963, 23367155, 36719815, 51407741, 257038705]

約数ペア:

[(1, 257038705), (5, 51407741), (7, 36719815), (11, 23367155), (35, 7343963), (55, 4673431), (77, 3338165), (197, 1304765), (385, 667633), (985, 260953), (1379, 186395), (2167, 118615), (3389, 75845), (6895, 37279), (10835, 23723), (15169, 16945)]