660879760

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{485941}}^1$

素因数の和:485971

約数の個数: 40

約数和(自身を含む): 1626933816

約数和(自身を除く): 966054056

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 485941, 971882, 1943764, 2429705, 3887528, 4859410, 7775056, 8260997, 9718820, 16521994, 19437640, 33043988, 38875280, 41304985, 66087976, 82609970, 132175952, 165219940, 330439880, 660879760]

約数ペア:

[(1, 660879760), (2, 330439880), (4, 165219940), (5, 132175952), (8, 82609970), (10, 66087976), (16, 41304985), (17, 38875280), (20, 33043988), (34, 19437640), (40, 16521994), (68, 9718820), (80, 8260997), (85, 7775056), (136, 4859410), (170, 3887528), (272, 2429705), (340, 1943764), (680, 971882), (1360, 485941)]