18990779585

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{647}}^1\times {\mathrm{3911}}^1$

素因数の和:4661

約数の個数: 32

約数和(自身を含む): 24335769600

約数和(自身を除く): 5344990015

約数列:

[1, 5, 19, 79, 95, 395, 647, 1501, 3235, 3911, 7505, 12293, 19555, 51113, 61465, 74309, 255565, 308969, 371545, 971147, 1544845, 2530417, 4855735, 5870411, 12652085, 29352055, 48077923, 199902943, 240389615, 999514715, 3798155917, 18990779585]

約数ペア:

[(1, 18990779585), (5, 3798155917), (19, 999514715), (79, 240389615), (95, 199902943), (395, 48077923), (647, 29352055), (1501, 12652085), (3235, 5870411), (3911, 4855735), (7505, 2530417), (12293, 1544845), (19555, 971147), (51113, 371545), (61465, 308969), (74309, 255565)]