218914925

素因数分解:

$5^2\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{557}}^1$

素因数の和:845

約数の個数: 24

約数和(自身を含む): 276768000

約数和(自身を除く): 57853075

約数列:

[1, 5, 25, 79, 199, 395, 557, 995, 1975, 2785, 4975, 13925, 15721, 44003, 78605, 110843, 220015, 393025, 554215, 1100075, 2771075, 8756597, 43782985, 218914925]

約数ペア:

[(1, 218914925), (5, 43782985), (25, 8756597), (79, 2771075), (199, 1100075), (395, 554215), (557, 393025), (995, 220015), (1975, 110843), (2785, 78605), (4975, 44003), (13925, 15721)]