981409280

素因数分解:

$2^9\times 5^1\times {\mathrm{19}}^1\times {\mathrm{20177}}^1$

素因数の和:20219

約数の個数: 80

約数和(自身を含む): 2477051280

約数和(自身を除く): 1495642000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 256, 304, 320, 380, 512, 608, 640, 760, 1216, 1280, 1520, 2432, 2560, 3040, 4864, 6080, 9728, 12160, 20177, 24320, 40354, 48640, 80708, 100885, 161416, 201770, 322832, 383363, 403540, 645664, 766726, 807080, 1291328, 1533452, 1614160, 1916815, 2582656, 3066904, 3228320, 3833630, 5165312, 6133808, 6456640, 7667260, 10330624, 12267616, 12913280, 15334520, 24535232, 25826560, 30669040, 49070464, 51653120, 61338080, 98140928, 122676160, 196281856, 245352320, 490704640, 981409280]

約数ペア:

[(1, 981409280), (2, 490704640), (4, 245352320), (5, 196281856), (8, 122676160), (10, 98140928), (16, 61338080), (19, 51653120), (20, 49070464), (32, 30669040), (38, 25826560), (40, 24535232), (64, 15334520), (76, 12913280), (80, 12267616), (95, 10330624), (128, 7667260), (152, 6456640), (160, 6133808), (190, 5165312), (256, 3833630), (304, 3228320), (320, 3066904), (380, 2582656), (512, 1916815), (608, 1614160), (640, 1533452), (760, 1291328), (1216, 807080), (1280, 766726), (1520, 645664), (2432, 403540), (2560, 383363), (3040, 322832), (4864, 201770), (6080, 161416), (9728, 100885), (12160, 80708), (20177, 48640), (24320, 40354)]