77790020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{50513}}^1$

素因数の和:50540

約数の個数: 48

約数和(自身を含む): 203672448

約数和(自身を除く): 125882428

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 50513, 101026, 202052, 252565, 353591, 505130, 555643, 707182, 1010260, 1111286, 1414364, 1767955, 2222572, 2778215, 3535910, 3889501, 5556430, 7071820, 7779002, 11112860, 15558004, 19447505, 38895010, 77790020]

約数ペア:

[(1, 77790020), (2, 38895010), (4, 19447505), (5, 15558004), (7, 11112860), (10, 7779002), (11, 7071820), (14, 5556430), (20, 3889501), (22, 3535910), (28, 2778215), (35, 2222572), (44, 1767955), (55, 1414364), (70, 1111286), (77, 1010260), (110, 707182), (140, 555643), (154, 505130), (220, 353591), (308, 252565), (385, 202052), (770, 101026), (1540, 50513)]