19910588120

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{929}}^1\times {\mathrm{3911}}^1$

素因数の和:4988

約数の個数: 64

約数和(自身を含む): 45185947200

約数和(自身を除く): 25275359080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 929, 1096, 1370, 1858, 2740, 3716, 3911, 4645, 5480, 7432, 7822, 9290, 15644, 18580, 19555, 31288, 37160, 39110, 78220, 127273, 156440, 254546, 509092, 535807, 636365, 1018184, 1071614, 1272730, 2143228, 2545460, 2679035, 3633319, 4286456, 5090920, 5358070, 7266638, 10716140, 14533276, 18166595, 21432280, 29066552, 36333190, 72666380, 145332760, 497764703, 995529406, 1991058812, 2488823515, 3982117624, 4977647030, 9955294060, 19910588120]

約数ペア:

[(1, 19910588120), (2, 9955294060), (4, 4977647030), (5, 3982117624), (8, 2488823515), (10, 1991058812), (20, 995529406), (40, 497764703), (137, 145332760), (274, 72666380), (548, 36333190), (685, 29066552), (929, 21432280), (1096, 18166595), (1370, 14533276), (1858, 10716140), (2740, 7266638), (3716, 5358070), (3911, 5090920), (4645, 4286456), (5480, 3633319), (7432, 2679035), (7822, 2545460), (9290, 2143228), (15644, 1272730), (18580, 1071614), (19555, 1018184), (31288, 636365), (37160, 535807), (39110, 509092), (78220, 254546), (127273, 156440)]