201280540

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{199}}^1\times {\mathrm{491}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 429811200

約数和(自身を除く): 228530660

約数列:

[1, 2, 4, 5, 10, 20, 103, 199, 206, 398, 412, 491, 515, 796, 982, 995, 1030, 1964, 1990, 2060, 2455, 3980, 4910, 9820, 20497, 40994, 50573, 81988, 97709, 101146, 102485, 195418, 202292, 204970, 252865, 390836, 409940, 488545, 505730, 977090, 1011460, 1954180, 10064027, 20128054, 40256108, 50320135, 100640270, 201280540]

約数ペア:

[(1, 201280540), (2, 100640270), (4, 50320135), (5, 40256108), (10, 20128054), (20, 10064027), (103, 1954180), (199, 1011460), (206, 977090), (398, 505730), (412, 488545), (491, 409940), (515, 390836), (796, 252865), (982, 204970), (995, 202292), (1030, 195418), (1964, 102485), (1990, 101146), (2060, 97709), (2455, 81988), (3980, 50573), (4910, 40994), (9820, 20497)]