1289596520

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{871349}}^1$

素因数の和:871397

約数の個数: 32

約数和(自身を含む): 2980017000

約数和(自身を除く): 1690420480

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 871349, 1742698, 3485396, 4356745, 6970792, 8713490, 17426980, 32239913, 34853960, 64479826, 128959652, 161199565, 257919304, 322399130, 644798260, 1289596520]

約数ペア:

[(1, 1289596520), (2, 644798260), (4, 322399130), (5, 257919304), (8, 161199565), (10, 128959652), (20, 64479826), (37, 34853960), (40, 32239913), (74, 17426980), (148, 8713490), (185, 6970792), (296, 4356745), (370, 3485396), (740, 1742698), (1480, 871349)]