204314920

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{491}}^1$

素因数の和:706

約数の個数: 64

約数和(自身を含む): 469722240

約数和(自身を除く): 265407320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 103, 202, 206, 404, 412, 491, 505, 515, 808, 824, 982, 1010, 1030, 1964, 2020, 2060, 2455, 3928, 4040, 4120, 4910, 9820, 10403, 19640, 20806, 41612, 49591, 50573, 52015, 83224, 99182, 101146, 104030, 198364, 202292, 208060, 247955, 252865, 396728, 404584, 416120, 495910, 505730, 991820, 1011460, 1983640, 2022920, 5107873, 10215746, 20431492, 25539365, 40862984, 51078730, 102157460, 204314920]

約数ペア:

[(1, 204314920), (2, 102157460), (4, 51078730), (5, 40862984), (8, 25539365), (10, 20431492), (20, 10215746), (40, 5107873), (101, 2022920), (103, 1983640), (202, 1011460), (206, 991820), (404, 505730), (412, 495910), (491, 416120), (505, 404584), (515, 396728), (808, 252865), (824, 247955), (982, 208060), (1010, 202292), (1030, 198364), (1964, 104030), (2020, 101146), (2060, 99182), (2455, 83224), (3928, 52015), (4040, 50573), (4120, 49591), (4910, 41612), (9820, 20806), (10403, 19640)]