81285040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1009}}^1$

素因数の和:1094

約数の個数: 80

約数和(自身を含む): 202888800

約数和(自身を除く): 121603760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 53, 76, 80, 95, 106, 152, 190, 212, 265, 304, 380, 424, 530, 760, 848, 1007, 1009, 1060, 1520, 2014, 2018, 2120, 4028, 4036, 4240, 5035, 5045, 8056, 8072, 10070, 10090, 16112, 16144, 19171, 20140, 20180, 38342, 40280, 40360, 53477, 76684, 80560, 80720, 95855, 106954, 153368, 191710, 213908, 267385, 306736, 383420, 427816, 534770, 766840, 855632, 1016063, 1069540, 1533680, 2032126, 2139080, 4064252, 4278160, 5080315, 8128504, 10160630, 16257008, 20321260, 40642520, 81285040]

約数ペア:

[(1, 81285040), (2, 40642520), (4, 20321260), (5, 16257008), (8, 10160630), (10, 8128504), (16, 5080315), (19, 4278160), (20, 4064252), (38, 2139080), (40, 2032126), (53, 1533680), (76, 1069540), (80, 1016063), (95, 855632), (106, 766840), (152, 534770), (190, 427816), (212, 383420), (265, 306736), (304, 267385), (380, 213908), (424, 191710), (530, 153368), (760, 106954), (848, 95855), (1007, 80720), (1009, 80560), (1060, 76684), (1520, 53477), (2014, 40360), (2018, 40280), (2120, 38342), (4028, 20180), (4036, 20140), (4240, 19171), (5035, 16144), (5045, 16112), (8056, 10090), (8072, 10070)]