80939270

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1\times {\mathrm{457}}^1$

素因数の和:752

約数の個数: 32

約数和(自身を含む): 148392000

約数和(自身を除く): 67452730

約数列:

[1, 2, 5, 10, 89, 178, 199, 398, 445, 457, 890, 914, 995, 1990, 2285, 4570, 17711, 35422, 40673, 81346, 88555, 90943, 177110, 181886, 203365, 406730, 454715, 909430, 8093927, 16187854, 40469635, 80939270]

約数ペア:

[(1, 80939270), (2, 40469635), (5, 16187854), (10, 8093927), (89, 909430), (178, 454715), (199, 406730), (398, 203365), (445, 181886), (457, 177110), (890, 90943), (914, 88555), (995, 81346), (1990, 40673), (2285, 35422), (4570, 17711)]