31087780

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 67132800

約数和(自身を除く): 36045020

約数列:

[1, 2, 4, 5, 10, 20, 73, 107, 146, 199, 214, 292, 365, 398, 428, 535, 730, 796, 995, 1070, 1460, 1990, 2140, 3980, 7811, 14527, 15622, 21293, 29054, 31244, 39055, 42586, 58108, 72635, 78110, 85172, 106465, 145270, 156220, 212930, 290540, 425860, 1554389, 3108778, 6217556, 7771945, 15543890, 31087780]

約数ペア:

[(1, 31087780), (2, 15543890), (4, 7771945), (5, 6217556), (10, 3108778), (20, 1554389), (73, 425860), (107, 290540), (146, 212930), (199, 156220), (214, 145270), (292, 106465), (365, 85172), (398, 78110), (428, 72635), (535, 58108), (730, 42586), (796, 39055), (995, 31244), (1070, 29054), (1460, 21293), (1990, 15622), (2140, 14527), (3980, 7811)]