77787140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{277}}^1\times {\mathrm{739}}^1$

素因数の和:1044

約数の個数: 48

約数和(自身を含む): 172804800

約数和(自身を除く): 95017660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 277, 380, 554, 739, 1108, 1385, 1478, 2770, 2956, 3695, 5263, 5540, 7390, 10526, 14041, 14780, 21052, 26315, 28082, 52630, 56164, 70205, 105260, 140410, 204703, 280820, 409406, 818812, 1023515, 2047030, 3889357, 4094060, 7778714, 15557428, 19446785, 38893570, 77787140]

約数ペア:

[(1, 77787140), (2, 38893570), (4, 19446785), (5, 15557428), (10, 7778714), (19, 4094060), (20, 3889357), (38, 2047030), (76, 1023515), (95, 818812), (190, 409406), (277, 280820), (380, 204703), (554, 140410), (739, 105260), (1108, 70205), (1385, 56164), (1478, 52630), (2770, 28082), (2956, 26315), (3695, 21052), (5263, 14780), (5540, 14041), (7390, 10526)]