266852560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{256589}}^1$

素因数の和:256615

約数の個数: 40

約数和(自身を含む): 668160360

約数和(自身を除く): 401307800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 256589, 513178, 1026356, 1282945, 2052712, 2565890, 3335657, 4105424, 5131780, 6671314, 10263560, 13342628, 16678285, 20527120, 26685256, 33356570, 53370512, 66713140, 133426280, 266852560]

約数ペア:

[(1, 266852560), (2, 133426280), (4, 66713140), (5, 53370512), (8, 33356570), (10, 26685256), (13, 20527120), (16, 16678285), (20, 13342628), (26, 10263560), (40, 6671314), (52, 5131780), (65, 4105424), (80, 3335657), (104, 2565890), (130, 2052712), (208, 1282945), (260, 1026356), (520, 513178), (1040, 256589)]