39803980

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 85780800

約数和(自身を除く): 45976820

約数列:

[1, 2, 4, 5, 10, 20, 73, 137, 146, 199, 274, 292, 365, 398, 548, 685, 730, 796, 995, 1370, 1460, 1990, 2740, 3980, 10001, 14527, 20002, 27263, 29054, 40004, 50005, 54526, 58108, 72635, 100010, 109052, 136315, 145270, 200020, 272630, 290540, 545260, 1990199, 3980398, 7960796, 9950995, 19901990, 39803980]

約数ペア:

[(1, 39803980), (2, 19901990), (4, 9950995), (5, 7960796), (10, 3980398), (20, 1990199), (73, 545260), (137, 290540), (146, 272630), (199, 200020), (274, 145270), (292, 136315), (365, 109052), (398, 100010), (548, 72635), (685, 58108), (730, 54526), (796, 50005), (995, 40004), (1370, 29054), (1460, 27263), (1990, 20002), (2740, 14527), (3980, 10001)]