313476740

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{997}}^1$

素因数の和:1284

約数の個数: 48

約数和(自身を含む): 670656000

約数和(自身を除く): 357179260

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 199, 316, 395, 398, 790, 796, 995, 997, 1580, 1990, 1994, 3980, 3988, 4985, 9970, 15721, 19940, 31442, 62884, 78605, 78763, 157210, 157526, 198403, 314420, 315052, 393815, 396806, 787630, 793612, 992015, 1575260, 1984030, 3968060, 15673837, 31347674, 62695348, 78369185, 156738370, 313476740]

約数ペア:

[(1, 313476740), (2, 156738370), (4, 78369185), (5, 62695348), (10, 31347674), (20, 15673837), (79, 3968060), (158, 1984030), (199, 1575260), (316, 992015), (395, 793612), (398, 787630), (790, 396806), (796, 393815), (995, 315052), (997, 314420), (1580, 198403), (1990, 157526), (1994, 157210), (3980, 78763), (3988, 78605), (4985, 62884), (9970, 31442), (15721, 19940)]