81578840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{6199}}^1$

素因数の和:6264

約数の個数: 64

約数和(自身を含む): 214272000

約数和(自身を除く): 132693160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1645, 1880, 2632, 3290, 6199, 6580, 12398, 13160, 24796, 30995, 43393, 49592, 61990, 86786, 123980, 173572, 216965, 247960, 291353, 347144, 433930, 582706, 867860, 1165412, 1456765, 1735720, 2039471, 2330824, 2913530, 4078942, 5827060, 8157884, 10197355, 11654120, 16315768, 20394710, 40789420, 81578840]

約数ペア:

[(1, 81578840), (2, 40789420), (4, 20394710), (5, 16315768), (7, 11654120), (8, 10197355), (10, 8157884), (14, 5827060), (20, 4078942), (28, 2913530), (35, 2330824), (40, 2039471), (47, 1735720), (56, 1456765), (70, 1165412), (94, 867860), (140, 582706), (188, 433930), (235, 347144), (280, 291353), (329, 247960), (376, 216965), (470, 173572), (658, 123980), (940, 86786), (1316, 61990), (1645, 49592), (1880, 43393), (2632, 30995), (3290, 24796), (6199, 13160), (6580, 12398)]