20512690700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{6571}}^1$

素因数の和:6688

約数の個数: 144

約数和(自身を含む): 49286845440

約数和(自身を除く): 28774154740

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 31, 38, 50, 53, 62, 76, 95, 100, 106, 124, 155, 190, 212, 265, 310, 380, 475, 530, 589, 620, 775, 950, 1007, 1060, 1178, 1325, 1550, 1643, 1900, 2014, 2356, 2650, 2945, 3100, 3286, 4028, 5035, 5300, 5890, 6571, 6572, 8215, 10070, 11780, 13142, 14725, 16430, 20140, 25175, 26284, 29450, 31217, 32855, 32860, 41075, 50350, 58900, 62434, 65710, 82150, 100700, 124849, 124868, 131420, 156085, 164275, 164300, 203701, 249698, 312170, 328550, 348263, 407402, 499396, 624245, 624340, 657100, 696526, 780425, 814804, 1018505, 1248490, 1393052, 1560850, 1741315, 2037010, 2496980, 3121225, 3121700, 3482630, 3870319, 4074020, 5092525, 6242450, 6616997, 6965260, 7740638, 8706575, 10185050, 10796153, 12484900, 13233994, 15481276, 17413150, 19351595, 20370100, 21592306, 26467988, 33084985, 34826300, 38703190, 43184612, 53980765, 66169970, 77406380, 96757975, 107961530, 132339940, 165424925, 193515950, 205126907, 215923060, 269903825, 330849850, 387031900, 410253814, 539807650, 661699700, 820507628, 1025634535, 1079615300, 2051269070, 4102538140, 5128172675, 10256345350, 20512690700]

約数ペア:

[(1, 20512690700), (2, 10256345350), (4, 5128172675), (5, 4102538140), (10, 2051269070), (19, 1079615300), (20, 1025634535), (25, 820507628), (31, 661699700), (38, 539807650), (50, 410253814), (53, 387031900), (62, 330849850), (76, 269903825), (95, 215923060), (100, 205126907), (106, 193515950), (124, 165424925), (155, 132339940), (190, 107961530), (212, 96757975), (265, 77406380), (310, 66169970), (380, 53980765), (475, 43184612), (530, 38703190), (589, 34826300), (620, 33084985), (775, 26467988), (950, 21592306), (1007, 20370100), (1060, 19351595), (1178, 17413150), (1325, 15481276), (1550, 13233994), (1643, 12484900), (1900, 10796153), (2014, 10185050), (2356, 8706575), (2650, 7740638), (2945, 6965260), (3100, 6616997), (3286, 6242450), (4028, 5092525), (5035, 4074020), (5300, 3870319), (5890, 3482630), (6571, 3121700), (6572, 3121225), (8215, 2496980), (10070, 2037010), (11780, 1741315), (13142, 1560850), (14725, 1393052), (16430, 1248490), (20140, 1018505), (25175, 814804), (26284, 780425), (29450, 696526), (31217, 657100), (32855, 624340), (32860, 624245), (41075, 499396), (50350, 407402), (58900, 348263), (62434, 328550), (65710, 312170), (82150, 249698), (100700, 203701), (124849, 164300), (124868, 164275), (131420, 156085)]