17965940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{997}}^1$

素因数の和:1076

約数の個数: 48

約数和(自身を含む): 40742352

約数和(自身を除く): 22776412

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 85, 106, 170, 212, 265, 340, 530, 901, 997, 1060, 1802, 1994, 3604, 3988, 4505, 4985, 9010, 9970, 16949, 18020, 19940, 33898, 52841, 67796, 84745, 105682, 169490, 211364, 264205, 338980, 528410, 898297, 1056820, 1796594, 3593188, 4491485, 8982970, 17965940]

約数ペア:

[(1, 17965940), (2, 8982970), (4, 4491485), (5, 3593188), (10, 1796594), (17, 1056820), (20, 898297), (34, 528410), (53, 338980), (68, 264205), (85, 211364), (106, 169490), (170, 105682), (212, 84745), (265, 67796), (340, 52841), (530, 33898), (901, 19940), (997, 18020), (1060, 16949), (1802, 9970), (1994, 9010), (3604, 4985), (3988, 4505)]