81633880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{461}}^1$

素因数の和:724

約数の個数: 64

約数和(自身を含む): 194594400

約数和(自身を除く): 112960520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 233, 380, 461, 466, 760, 922, 932, 1165, 1844, 1864, 2305, 2330, 3688, 4427, 4610, 4660, 8759, 8854, 9220, 9320, 17518, 17708, 18440, 22135, 35036, 35416, 43795, 44270, 70072, 87590, 88540, 107413, 175180, 177080, 214826, 350360, 429652, 537065, 859304, 1074130, 2040847, 2148260, 4081694, 4296520, 8163388, 10204235, 16326776, 20408470, 40816940, 81633880]

約数ペア:

[(1, 81633880), (2, 40816940), (4, 20408470), (5, 16326776), (8, 10204235), (10, 8163388), (19, 4296520), (20, 4081694), (38, 2148260), (40, 2040847), (76, 1074130), (95, 859304), (152, 537065), (190, 429652), (233, 350360), (380, 214826), (461, 177080), (466, 175180), (760, 107413), (922, 88540), (932, 87590), (1165, 70072), (1844, 44270), (1864, 43795), (2305, 35416), (2330, 35036), (3688, 22135), (4427, 18440), (4610, 17708), (4660, 17518), (8759, 9320), (8854, 9220)]