243977980

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{199}}^1\times {\mathrm{1039}}^1$

素因数の和:1306

約数の個数: 48

約数和(自身を含む): 524160000

約数和(自身を除く): 280182020

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 199, 236, 295, 398, 590, 796, 995, 1039, 1180, 1990, 2078, 3980, 4156, 5195, 10390, 11741, 20780, 23482, 46964, 58705, 61301, 117410, 122602, 206761, 234820, 245204, 306505, 413522, 613010, 827044, 1033805, 1226020, 2067610, 4135220, 12198899, 24397798, 48795596, 60994495, 121988990, 243977980]

約数ペア:

[(1, 243977980), (2, 121988990), (4, 60994495), (5, 48795596), (10, 24397798), (20, 12198899), (59, 4135220), (118, 2067610), (199, 1226020), (236, 1033805), (295, 827044), (398, 613010), (590, 413522), (796, 306505), (995, 245204), (1039, 234820), (1180, 206761), (1990, 122602), (2078, 117410), (3980, 61301), (4156, 58705), (5195, 46964), (10390, 23482), (11741, 20780)]