320073080

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{379}}^1\times {\mathrm{491}}^1$

素因数の和:924

約数の個数: 64

約数和(自身を含む): 740361600

約数和(自身を除く): 420288520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 379, 430, 491, 758, 860, 982, 1516, 1720, 1895, 1964, 2455, 3032, 3790, 3928, 4910, 7580, 9820, 15160, 16297, 19640, 21113, 32594, 42226, 65188, 81485, 84452, 105565, 130376, 162970, 168904, 186089, 211130, 325940, 372178, 422260, 651880, 744356, 844520, 930445, 1488712, 1860890, 3721780, 7443560, 8001827, 16003654, 32007308, 40009135, 64014616, 80018270, 160036540, 320073080]

約数ペア:

[(1, 320073080), (2, 160036540), (4, 80018270), (5, 64014616), (8, 40009135), (10, 32007308), (20, 16003654), (40, 8001827), (43, 7443560), (86, 3721780), (172, 1860890), (215, 1488712), (344, 930445), (379, 844520), (430, 744356), (491, 651880), (758, 422260), (860, 372178), (982, 325940), (1516, 211130), (1720, 186089), (1895, 168904), (1964, 162970), (2455, 130376), (3032, 105565), (3790, 84452), (3928, 81485), (4910, 65188), (7580, 42226), (9820, 32594), (15160, 21113), (16297, 19640)]